初中物理电学知识点总结 初中物理电学知识点总结
\u521d\u4e2d\u7269\u7406\u7535\u5b66\u7684\u6240\u6709\u77e5\u8bc6\u70b9\uff0c\u8981\u5168\u9762\uff011\uff0c\u7535\u8def\u4e0e\u7535\u6d41\uff0c\u4e32\u8054\u7535\u8def\u4e0e\u5e76\u8054\u7535\u8def\u4e2d\u7535\u6d41\u7684\u89c4\u5f8b\uff1b
2\uff0c\u7535\u538b\u4e0e\u7535\u963b\uff0c\u4e32\u8054\u7535\u8def\u4e0e\u5e76\u8054\u7535\u8def\u4e2d\u7535\u538b\u7684\u89c4\u5f8b\uff0c\u5f71\u54cd\u7535\u963b\u5927\u5c0f\u7684\u56e0\u7d20\uff1b
3\uff0c\u7535\u8def\u4e2d\u7535\u6d41\u8ddf\u7535\u538b\u53ca\u7535\u963b\u7684\u5173\u7cfb----\u6b27\u59c6\u5b9a\u5f8b\uff0c\u4e32\u8054\u7535\u8def\u4e0e\u5e76\u8054\u7535\u8def\u603b\u7535\u963b\uff1b
4\uff0c\u7535\u80fd\u4e0e\u7535\u529f\uff0c\u7535\u6d41\u7684\u70ed\u6548\u5e94\uff0c\u7535\u529f\u7387\u3002
\u521d\u4e2d\u7269\u7406\u7535\u5b66\u77e5\u8bc6\u70b9\u603b\u7ed3
1\u3001\u7535\u8def\uff1a\u628a\u7535\u6e90\u3001\u7528\u7535\u5668\u3001\u5f00\u5173\u3001\u5bfc\u7ebf\u8fde\u63a5\u8d77\u6765\u7ec4\u6210\u7684\u7535\u6d41\u7684\u8def\u5f84\u3002
2\u3001\u901a\u8def\uff1a\u5904\u5904\u63a5\u901a\u7684\u7535\u8def\uff1b\u5f00\u8def\uff1a\u65ad\u5f00\u7684\u7535\u8def\uff1b\u77ed\u8def\uff1a\u5c06\u5bfc\u7ebf\u76f4\u63a5\u8fde\u63a5\u5728\u7528\u7535\u5668\u6216\u7535\u6e90\u4e24\u7aef\u7684\u7535 \u8def\u3002
3\u3001\u7535\u6d41\u7684\u5f62\u6210:\u7535\u8377\u7684\u5b9a\u5411\u79fb\u52a8\u5f62\u6210\u7535\u6d41.(\u4efb\u4f55\u7535\u8377\u7684\u5b9a\u5411\u79fb\u52a8\u90fd\u4f1a\u5f62\u6210\u7535\u6d41)
4\u3001\u7535\u6d41\u7684\u65b9\u5411:\u4ece\u7535\u6e90\u6b63\u6781\u6d41\u5411\u8d1f\u6781.
5\u3001\u7535\u6e90:\u80fd\u63d0\u4f9b\u6301\u7eed\u7535\u6d41(\u6216\u7535\u538b)\u7684\u88c5\u7f6e.
6\u3001\u7535\u6e90\u662f\u628a\u5176\u4ed6\u5f62\u5f0f\u7684\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd.\u5982\u5e72\u7535\u6c60\u662f\u628a\u5316\u5b66\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd.\u53d1\u7535\u673a\u5219\u7531\u673a\u68b0\u80fd\u8f6c\u5316\u4e3a \u7535\u80fd.
7\u3001\u5728\u7535\u6e90\u5916\u90e8\uff0c\u7535\u6d41\u7684\u65b9\u5411\u662f\u4ece\u7535\u6e90\u7684\u6b63\u6781\u6d41\u5411\u8d1f\u6781\u3002
8\u3001\u6709\u6301\u7eed\u7535\u6d41\u7684\u6761\u4ef6:\u5fc5\u987b\u6709\u7535\u6e90\u548c\u7535\u8def\u95ed\u5408.
9\u3001\u5bfc\u4f53:\u5bb9\u6613\u5bfc\u7535\u7684\u7269\u4f53\u53eb\u5bfc\u4f53.\u5982:\u91d1\u5c5e,\u4eba\u4f53,\u5927\u5730,\u76d0\u6c34\u6eb6\u6db2\u7b49.\u5bfc\u4f53\u5bfc\u7535\u7684\u539f\u56e0\uff1a\u5bfc\u4f53\u4e2d\u6709\u81ea\u7531 \u79fb\u52a8\u7684\u7535\u8377\uff1b
10\u3001\u7edd\u7f18\u4f53:\u4e0d\u5bb9\u6613\u5bfc\u7535\u7684\u7269\u4f53\u53eb\u7edd\u7f18\u4f53.\u5982:\u73bb\u7483,\u9676\u74f7,\u5851\u6599,\u6cb9,\u7eaf\u6c34\u7b49. \u539f\u56e0\uff1a\u7f3a\u5c11\u81ea\u7531\u79fb\u52a8\u7684 \u7535\u8377
11\u3001\u7535\u6d41\u8868\u7684\u4f7f\u7528\u89c4\u5219:\u2460\u7535\u6d41\u8868\u8981\u4e32\u8054\u5728\u7535\u8def\u4e2d;\u2461\u7535\u6d41\u8981\u4ece"+"\u63a5\u7ebf\u67f1\u6d41\u5165,\u4ece"-"\u63a5\u7ebf\u67f1\u6d41\u51fa;\u2462\u88ab\u6d4b\u7535\u6d41\u4e0d\u8981\u8d85\u8fc7\u7535\u6d41\u8868\u7684\u91cf\u7a0b;\u2463\u7edd\u5bf9\u4e0d\u5141\u8bb8\u4e0d\u7ecf\u8fc7\u7528\u7535\u5668\u800c\u628a\u7535\u6d41\u8868\u8fde\u5230\u7535\u6e90\u7684\u4e24\u6781\u4e0a.
\u5b9e\u9a8c\u5ba4\u4e2d\u5e38\u7528\u7684\u7535\u6d41\u8868\u6709\u4e24\u4e2a\u91cf\u7a0b:\u24600\uff5e0.6\u5b89,\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u6d41\u503c\u662f0.02\u5b89;\u24610\uff5e3\u5b89,\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u6d41\u503c\u662f0.1\u5b89.
12\u3001\u7535\u538b\u662f\u4f7f\u7535\u8def\u4e2d\u5f62\u6210\u7535\u6d41\u7684\u539f\u56e0,\u56fd\u9645\u5355\u4f4d:\u4f0f\u7279(V);
\u5e38\u7528:\u5343\u4f0f(KV),\u6beb\u4f0f(mV). 1\u5343\u4f0f=1000\u4f0f=1000000\u6beb\u4f0f.
13\u3001\u7535\u538b\u8868\u7684\u4f7f\u7528\u89c4\u5219:\u2460\u7535\u538b\u8868\u8981\u5e76\u8054\u5728\u7535\u8def\u4e2d;\u2461\u7535\u6d41\u8981\u4ece"+"\u63a5 \u7ebf\u67f1\u6d41\u5165,\u4ece"-"\u63a5\u7ebf\u67f1\u6d41\u51fa;\u2462\u88ab\u6d4b\u7535\u538b\u4e0d\u8981\u8d85\u8fc7\u7535\u538b\u8868\u7684\u91cf\u7a0b;
\u5b9e\u9a8c\u5ba4\u5e38\u7528\u7535\u538b\u8868\u6709\u4e24\u4e2a\u91cf\u7a0b:\u24600\uff5e3\u4f0f,\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u538b\u503c\u662f0.1\u4f0f; \u24610\uff5e15\u4f0f,\u6bcf\u5c0f\u683c \u8868\u793a\u7684\u7535\u538b\u503c\u662f0.5\u4f0f.
14\u3001\u719f\u8bb0\u7684\u7535\u538b\u503c:\u24601\u8282\u5e72\u7535\u6c60\u7684\u7535\u538b1.5\u4f0f;\u24611\u8282\u94c5\u84c4\u7535\u6c60\u7535\u538b\u662f2\u4f0f;\u2462\u5bb6\u5ead\u7167\u660e\u7535\u538b\u4e3a220\u4f0f;\u2463\u5b89\u5168\u7535\u538b\u662f:\u4e0d\u9ad8\u4e8e36\u4f0f;\u2464\u5de5\u4e1a\u7535\u538b380\u4f0f.
15\u3001\u7535\u963b(R):\u8868\u793a\u5bfc\u4f53\u5bf9\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528.\u56fd\u9645\u5355\u4f4d:\u6b27\u59c6(\u03a9);
\u5e38\u7528:\u5146\u6b27(M\u03a9),\u5343\u6b27(K\u03a9);1\u5146\u6b27=1000\u5343\u6b27; 1\u5343\u6b27=1000\u6b27.
16\u3001\u51b3\u5b9a\u7535\u963b\u5927\u5c0f\u7684\u56e0\u7d20:\u6750\u6599,\u957f\u5ea6,\u6a2a\u622a\u9762\u79ef\u548c\u6e29\u5ea6
17\u3001\u6ed1\u52a8\u53d8\u963b\u5668:
A. \u539f\u7406:\u6539\u53d8\u7535\u963b\u7ebf\u5728\u7535\u8def\u4e2d\u7684\u957f\u5ea6\u6765\u6539\u53d8\u7535\u963b\u7684.
B. \u4f5c\u7528:\u901a\u8fc7\u6539\u53d8\u63a5\u5165\u7535\u8def\u4e2d\u7684\u7535\u963b\u6765\u6539\u53d8\u7535\u8def\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b.
C. \u6b63\u786e\u4f7f\u7528:a,\u5e94\u4e32\u8054\u5728\u7535\u8def\u4e2d\u4f7f\u7528;b,\u63a5\u7ebf\u8981"\u4e00\u4e0a\u4e00\u4e0b";c,\u95ed\u5408\u5f00\u5173\u524d\u5e94\u628a\u963b\u503c\u8c03\u81f3\u6700\u5927\u7684\u5730\u65b9.
18\u3001\u6b27\u59c6\u5b9a\u5f8b:\u5bfc\u4f53\u4e2d\u7684\u7535\u6d41,\u8ddf\u5bfc\u4f53\u4e24\u7aef\u7684\u7535\u538b\u6210\u6b63\u6bd4,\u8ddf\u5bfc\u4f53\u7684\u7535\u963b\u6210\u53cd\u6bd4.
\u516c\u5f0f:I=U/R. \u516c\u5f0f\u4e2d\u5355\u4f4d:I\u2192\u5b89(A);U\u2192\u4f0f(V);R\u2192\u6b27(\u03a9).
\u7b2c\u5341\u4e09\u7ae0 \u7535\u8def\u521d\u63a2\u77e5\u8bc6\u5f52\u7eb3
1. \u7535\u6e90\uff1a\u80fd\u63d0\u4f9b\u6301\u7eed\u7535\u6d41\uff08\u6216\u7535\u538b\uff09\u7684\u88c5\u7f6e\u3002
2. \u7535\u6e90\u662f\u628a\u5176\u4ed6\u5f62\u5f0f\u7684\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002\u5982\u5e72\u7535\u6c60\u662f\u628a\u5316\u5b66\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002\u53d1\u7535\u673a\u5219\u7531\u673a\u68b0\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002
3. \u6709\u6301\u7eed\u7535\u6d41\u7684\u6761\u4ef6\uff1a\u5fc5\u987b\u6709\u7535\u6e90\u548c\u7535\u8def\u95ed\u5408\u3002
4. \u5bfc\u4f53\uff1a\u5bb9\u6613\u5bfc\u7535\u7684\u7269\u4f53\u53eb\u5bfc\u4f53\u3002\u5982\uff1a\u91d1\u5c5e\uff0c\u4eba\u4f53\uff0c\u5927\u5730\uff0c\u9178\u3001\u78b1\u3001\u76d0\u7684\u6c34\u6eb6\u6db2\u7b49\u3002
5. \u7edd\u7f18\u4f53\uff1a\u4e0d\u5bb9\u6613\u5bfc\u7535\u7684\u7269\u4f53\u53eb\u7edd\u7f18\u4f53\u3002\u5982\uff1a\u6a61\u80f6\uff0c\u73bb\u7483\uff0c\u9676\u74f7\uff0c\u5851\u6599\uff0c\u6cb9\uff0c\u7eaf\u6c34\u7b49\u3002
6. \u7535\u8def\u7ec4\u6210\uff1a\u7531\u7535\u6e90\u3001\u5bfc\u7ebf\u3001\u5f00\u5173\u548c\u7528\u7535\u5668\u7ec4\u6210\u3002
7. \u7535\u8def\u6709\u4e09\u79cd\u72b6\u6001\uff1a(1)\u901a\u8def\uff1a\u63a5\u901a\u7684\u7535\u8def\u53eb\u901a\u8def\uff1b(2)\u65ad\u8def\uff1a\u65ad\u5f00\u7684\u7535\u8def\u53eb\u5f00\u8def\uff1b(3)\u77ed\u8def\uff1a\u76f4\u63a5\u628a\u5bfc\u7ebf\u63a5\u5728\u7535\u6e90\u4e24\u6781\u4e0a\u7684\u7535\u8def\u53eb\u77ed\u8def\u3002
8. \u7535\u8def\u56fe\uff1a\u7528\u7b26\u53f7\u8868\u793a\u7535\u8def\u8fde\u63a5\u7684\u56fe\u53eb\u7535\u8def\u56fe\u3002
9. \u4e32\u8054\uff1a\u628a\u7535\u8def\u5143\u4ef6\u9010\u4e2a\u987a\u6b21\u8fde\u63a5\u8d77\u6765\u7684\u7535\u8def\uff0c\u53eb\u4e32\u8054\u3002\uff08\u7535\u8def\u4e2d\u4efb\u610f\u4e00\u5904\u65ad\u5f00\uff0c\u7535\u8def\u4e2d\u90fd\u6ca1\u6709\u7535\u6d41\u901a\u8fc7\uff09
10. \u5e76\u8054\uff1a\u628a\u7535\u8def\u5143\u4ef6\u5e76\u5217\u5730\u8fde\u63a5\u8d77\u6765\u7684\u7535\u8def\uff0c\u53eb\u5e76\u8054\u3002\uff08\u5e76\u8054\u7535\u8def\u4e2d\u5404\u4e2a\u652f\u8def\u662f\u4e92\u4e0d\u5f71\u54cd\u7684\uff09
1\uff0e\u7535\u6d41\u7684\u5927\u5c0f\u7528\u7535\u6d41\u5f3a\u5ea6(\u7b80\u79f0\u7535\u6d41)\u8868\u793a\u3002
2\uff0e\u7535\u6d41I\u7684\u5355\u4f4d\u662f\uff1a\u56fd\u9645\u5355\u4f4d\u662f\uff1a\u5b89\u57f9(A)\uff1b\u5e38\u7528\u5355\u4f4d\u662f\uff1a\u6beb\u5b89(mA)\u3001\u5fae\u5b89(µA)\u30021\u5b89\u57f9=103\u6beb\u5b89=106\u5fae\u5b89\u3002
3\uff0e\u6d4b\u91cf\u7535\u6d41\u7684\u4eea\u8868\u662f\uff1a\u7535\u6d41\u8868\uff0c\u5b83\u7684\u4f7f\u7528\u89c4\u5219\u662f\uff1a\u2460\u7535\u6d41\u8868\u8981\u4e32\u8054\u5728\u7535\u8def\u4e2d\uff1b\u2461\u63a5\u7ebf\u67f1\u7684\u63a5\u6cd5\u8981\u6b63\u786e\uff0c\u4f7f\u7535\u6d41\u4ece\u201c+\u201d\u63a5\u7ebf\u67f1\u5165\uff0c\u4ece\u201c-\u201d\u63a5\u7ebf\u67f1\u51fa\uff1b\u2462\u88ab\u6d4b\u7535\u6d41\u4e0d\u8981\u8d85\u8fc7\u7535\u6d41\u8868\u7684\u91cf\u7a0b\uff1b\u2463\u7edd\u5bf9\u4e0d\u5141\u8bb8\u4e0d\u7ecf\u8fc7\u7528\u7535\u5668\u800c\u628a\u7535\u6d41\u8868\u8fde\u5230\u7535\u6e90\u7684\u4e24\u6781\u4e0a\u3002
4\uff0e\u5b9e\u9a8c\u5ba4\u4e2d\u5e38\u7528\u7684\u7535\u6d41\u8868\u6709\u4e24\u4e2a\u91cf\u7a0b\uff1a\u24600\uff5e0.6\u5b89\uff0c\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u6d41\u503c\u662f0.02\u5b89\uff1b\u24610\uff5e3\u5b89\uff0c\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u6d41\u503c\u662f0.1\u5b89\u3002
1\uff0e\u7535\u538b(U):\u7535\u538b\u662f\u4f7f\u7535\u8def\u4e2d\u5f62\u6210\u7535\u6d41\u7684\u539f\u56e0\uff0c\u7535\u6e90\u662f\u63d0\u4f9b\u7535\u538b\u7684\u88c5\u7f6e\u3002
2\uff0e\u7535\u538bU\u7684\u5355\u4f4d\u662f\uff1a\u56fd\u9645\u5355\u4f4d\u662f\uff1a\u4f0f\u7279(V)\uff1b\u5e38\u7528\u5355\u4f4d\u662f\uff1a\u5343\u4f0f(KV)\u3001\u6beb\u4f0f(mV)\u3001\u5fae\u4f0f(µV)\u30021\u5343\u4f0f=103\u4f0f=106\u6beb\u4f0f=109\u5fae\u4f0f\u3002
3\uff0e\u6d4b\u91cf\u7535\u538b\u7684\u4eea\u8868\u662f\uff1a\u7535\u538b\u8868\uff0c\u5b83\u7684\u4f7f\u7528\u89c4\u5219\u662f\uff1a\u2460\u7535\u538b\u8868\u8981\u5e76\u8054\u5728\u7535\u8def\u4e2d\uff1b\u2461\u63a5\u7ebf\u67f1\u7684\u63a5\u6cd5\u8981\u6b63\u786e\uff0c\u4f7f\u7535\u6d41\u4ece\u201c+\u201d\u63a5\u7ebf\u67f1\u5165\uff0c\u4ece\u201c-\u201d\u63a5\u7ebf\u67f1\u51fa\uff1b\u2462\u88ab\u6d4b\u7535\u538b\u4e0d\u8981\u8d85\u8fc7\u7535\u538b\u8868\u7684\u91cf\u7a0b\uff1b
4\uff0e\u5b9e\u9a8c\u5ba4\u4e2d\u5e38\u7528\u7684\u7535\u538b\u8868\u6709\u4e24\u4e2a\u91cf\u7a0b\uff1a\u24600\uff5e3\u4f0f\uff0c\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u538b\u503c\u662f0.1\u4f0f\uff1b\u24610\uff5e15\u4f0f\uff0c\u6bcf\u5c0f\u683c\u8868\u793a\u7684\u7535\u538b\u503c\u662f0.5\u4f0f\u3002
5\uff0e\u719f\u8bb0\u7684\u7535\u538b\u503c\uff1a
\u24601\u8282\u5e72\u7535\u6c60\u7684\u7535\u538b1.5\u4f0f\uff1b\u24611\u8282\u94c5\u84c4\u7535\u6c60\u7535\u538b\u662f2\u4f0f\uff1b\u2462\u5bb6\u5ead\u7167\u660e\u7535\u538b\u4e3a220\u4f0f\uff1b\u2463\u5bf9\u4eba\u4f53\u5b89\u5168\u7684\u7535\u538b\u662f\uff1a\u4e0d\u9ad8\u4e8e36\u4f0f\uff1b\u2464\u5de5\u4e1a\u7535\u538b380\u4f0f\u3002
1\uff0e\u7535\u963b(R)\uff1a\u8868\u793a\u5bfc\u4f53\u5bf9\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528\u3002(\u5bfc\u4f53\u5982\u679c\u5bf9\u7535\u6d41\u7684\u963b\u788d\u4f5c\u7528\u8d8a\u5927\uff0c\u90a3\u4e48\u7535\u963b\u5c31\u8d8a\u5927\uff0c\u800c\u901a\u8fc7\u5bfc\u4f53\u7684\u7535\u6d41\u5c31\u8d8a\u5c0f)\u3002
2\uff0e\u7535\u963b(R)\u7684\u5355\u4f4d\uff1a\u56fd\u9645\u5355\u4f4d\uff1a\u6b27\u59c6(\u03a9)\uff1b\u5e38\u7528\u7684\u5355\u4f4d\u6709\uff1a\u5146\u6b27(M\u03a9)\u3001\u5343\u6b27(K\u03a9)\u3002
1\u5146\u6b27=103\u5343\u6b27\uff1b1\u5343\u6b27=103\u6b27\u3002
3\uff0e\u51b3\u5b9a\u7535\u963b\u5927\u5c0f\u7684\u56e0\u7d20\uff1a\u5bfc\u4f53\u7684\u7535\u963b\u662f\u5bfc\u4f53\u672c\u8eab\u7684\u4e00\u79cd\u6027\u8d28\uff0c\u5b83\u7684\u5927\u5c0f\u51b3\u5b9a\u4e8e\u5bfc\u4f53\u7684\u6750\u6599\u3001\u957f\u5ea6\u3001\u6a2a\u622a\u9762\u79ef\u548c\u6e29\u5ea6\u3002\uff08\u7535\u963b\u4e0e\u52a0\u5728\u5bfc\u4f53\u4e24\u7aef\u7684\u7535\u538b\u548c\u901a\u8fc7\u7684\u7535\u6d41\u65e0\u5173\uff09
4\uff0e\u53d8\u963b\u5668\uff1a(\u6ed1\u52a8\u53d8\u963b\u5668\u548c\u7535\u963b\u7bb1)
(1)\u6ed1\u52a8\u53d8\u963b\u5668\uff1a
\u2460 \u539f\u7406\uff1a\u6539\u53d8\u63a5\u5165\u7535\u8def\u4e2d\u7535\u963b\u7ebf\u7684\u957f\u5ea6\u6765\u6539\u53d8\u7535\u963b\u7684\u3002
\u2461 \u4f5c\u7528\uff1a\u901a\u8fc7\u6539\u53d8\u63a5\u5165\u7535\u8def\u4e2d\u7684\u7535\u963b\u6765\u6539\u53d8\u7535\u8def\u4e2d\u7684\u7535\u6d41\u548c\u7535\u538b\u3002
\u2462 \u94ed\u724c\uff1a\u5982\u4e00\u4e2a\u6ed1\u52a8\u53d8\u963b\u5668\u6807\u6709\u201c50\u03a92A\u201d\u8868\u793a\u7684\u610f\u4e49\u662f\uff1a\u6700\u5927\u963b\u503c\u662f50\u03a9\uff0c\u5141\u8bb8\u901a\u8fc7\u7684\u6700\u5927\u7535\u6d41\u662f2A\u3002
\u2463 \u6b63\u786e\u4f7f\u7528\uff1aA\uff0e\u5e94\u4e32\u8054\u5728\u7535\u8def\u4e2d\u4f7f\u7528\uff1bB\uff0e\u63a5\u7ebf\u8981\u201c\u4e00\u4e0a\u4e00\u4e0b\u201d\uff1bC\uff0e\u901a\u7535\u524d\u5e94\u628a\u963b\u503c\u8c03\u81f3\u6700\u5927\u7684\u5730\u65b9\u3002
(2)\u7535\u963b\u7bb1\uff1a\u662f\u80fd\u591f\u8868\u793a\u51fa\u7535\u963b\u503c\u7684\u53d8\u963b\u5668\u3002
\u7b2c\u5341\u56db\u7ae0 \u6b27\u59c6\u5b9a\u5f8b\u77e5\u8bc6\u5f52\u7eb3
1\uff0e\u6b27\u59c6\u5b9a\u5f8b\uff1a\u5bfc\u4f53\u4e2d\u7684\u7535\u6d41\uff0c\u4e0e\u5bfc\u4f53\u4e24\u7aef\u7684\u7535\u538b\u6210 \u6b63\u6bd4\uff0c\u4e0e\u5bfc\u4f53\u7684\u7535\u963b\u6210\u53cd\u6bd4\u3002
2\uff0e\u516c\u5f0f\uff1a\uff08I=U/R\uff09\u5f0f \u4e2d\u5355\u4f4d\uff1aI\u2192\u5b89(A)\uff1bU\u2192\u4f0f(V)\uff1bR\u2192\u6b27(\u03a9)\u30021\u5b89=1\u4f0f/\u6b27\u3002
3\uff0e\u516c\u5f0f\u7684\u7406\u89e3\uff1a\u2460\u516c\u5f0f\u4e2d\u7684I\u3001U\u548cR\u5fc5\u987b\u662f\u5728\u540c\u4e00\u6bb5\u7535\u8def\u4e2d\uff1b\u2461I\u3001U\u548cR\u4e2d\u5df2\u77e5\u4efb\u610f\u7684\u4e24\u4e2a\u91cf\u5c31\u53ef\u6c42\u53e6\u4e00\u4e2a\u91cf\uff1b\u2462\u8ba1\u7b97\u65f6\u5355\u4f4d\u8981\u7edf\u4e00\u3002
4\uff0e\u6b27\u59c6\u5b9a\u5f8b\u7684\u5e94\u7528\uff1a
\u2460 \u540c\u4e00\u4e2a\u7535\u963b\uff0c\u963b\u503c\u4e0d\u53d8\uff0c\u4e0e\u7535\u6d41\u548c\u7535\u538b\u65e0\u5173, \u4f46\u52a0\u5728\u8fd9\u4e2a\u7535\u963b\u4e24\u7aef\u7684\u7535\u538b\u589e\u5927\u65f6\uff0c\u901a\u8fc7\u7684\u7535\u6d41\u4e5f\u589e\u5927\u3002\uff08R=U/I\uff09
\u2461\u5f53\u7535\u538b\u4e0d\u53d8\u65f6\uff0c\u7535\u963b\u8d8a\u5927\uff0c\u5219\u901a\u8fc7\u7684\u7535\u6d41\u5c31\u8d8a\u5c0f\u3002\uff08I=U/R\uff09
\u2462\u5f53\u7535\u6d41\u4e00\u5b9a\u65f6\uff0c\u7535\u963b\u8d8a\u5927\uff0c\u5219\u7535\u963b\u4e24\u7aef\u7684\u7535\u538b\u5c31\u8d8a\u5927\u3002\uff08U=IR\uff09
5\uff0e\u7535\u963b\u7684\u4e32\u8054\u6709\u4ee5\u4e0b\u51e0\u4e2a\u7279\u70b9\uff1a\uff08\u6307R1\uff0cR2\u4e32\u8054\uff09
\u2460 \u7535\u6d41\uff1aI=I1=I2\uff08\u4e32\u8054\u7535\u8def\u4e2d\u5404\u5904\u7684\u7535\u6d41\u76f8\u7b49\uff09
\u2461 \u7535\u538b\uff1aU=U1+U2\uff08\u603b\u7535\u538b\u7b49\u4e8e\u5404\u5904\u7535\u538b\u4e4b\u548c\uff09
\u2462 \u7535\u963b\uff1aR=R1+R2\uff08\u603b\u7535\u963b\u7b49\u4e8e\u5404\u7535\u963b\u4e4b\u548c\uff09\u5982\u679cn\u4e2a\u963b\u503c\u76f8\u540c\u7684\u7535\u963b\u4e32\u8054\uff0c\u5219\u6709R\u603b=nR
\u2463\u5206\u538b\u4f5c\u7528
\u2464 \u6bd4\u4f8b\u5173\u7cfb\uff1a\u7535\u6d41\uff1aI1\u2236I2=1\u22361
6\uff0e\u7535\u963b\u7684\u5e76\u8054\u6709\u4ee5\u4e0b\u51e0\u4e2a\u7279\u70b9\uff1a\uff08\u6307R1\uff0cR2\u5e76\u8054\uff09
\u2460 \u7535\u6d41\uff1aI=I1+I2\uff08\u5e72\u8def\u7535\u6d41\u7b49\u4e8e\u5404\u652f\u8def\u7535\u6d41\u4e4b\u548c\uff09
\u2461 \u7535\u538b\uff1aU=U1=U2\uff08\u5e72\u8def\u7535\u538b\u7b49\u4e8e\u5404\u652f\u8def\u7535\u538b\uff09
\u2462 \u7535\u963b\uff1a\uff08\u603b\u7535\u963b\u7684\u5012\u6570\u7b49\u4e8e\u5404\u5e76\u8054\u7535\u963b\u7684\u5012\u6570\u548c\uff09\u5982\u679cn\u4e2a\u963b\u503c\u76f8\u540c\u7684\u7535\u963b\u5e76\u8054\uff0c\u5219\u67091/R\u603b= 1/R1+1/R2
\u2463 \u5206\u6d41\u4f5c\u7528\uff1aI1\uff1aI2=1/R1\uff1a1/R2
\u2464 \u6bd4\u4f8b\u5173\u7cfb\uff1a\u7535\u538b\uff1aU1\u2236U2=1\u22361
\u7b2c\u5341\u4e94\u7ae0 \u7535\u529f\u548c\u7535\u70ed\u77e5\u8bc6\u5f52\u7eb3
1\uff0e\u7535\u529f\uff08W\uff09\uff1a\u7535\u6d41\u6240\u505a\u7684\u529f\u53eb\u7535\u529f\uff0c
2\uff0e\u7535\u529f\u7684\u5355\u4f4d\uff1a\u56fd\u9645\u5355\u4f4d\uff1a\u7126\u8033\u3002\u5e38\u7528\u5355\u4f4d\u6709\uff1a\u5ea6\uff08\u5343\u74e6\u65f6\uff09\uff0c1\u5ea6=1\u5343\u74e6\u65f6=3.6\u00d7106\u7126\u8033\u3002
3\uff0e\u6d4b\u91cf\u7535\u529f\u7684\u5de5\u5177\uff1a\u7535\u80fd\u8868\uff08\u7535\u5ea6\u8868\uff09
4\uff0e\u7535\u529f\u8ba1\u7b97\u516c\u5f0f\uff1aW=UIt\uff08\u5f0f\u4e2d\u5355\u4f4dW\u2192\u7126(J)\uff1bU\u2192\u4f0f(V)\uff1bI\u2192\u5b89(A)\uff1bt\u2192\u79d2\uff09\u3002
5\uff0e\u5229\u7528W=UIt\u8ba1\u7b97\u7535\u529f\u65f6\u6ce8\u610f\uff1a\u2460\u5f0f\u4e2d\u7684W.U.I\u548ct\u662f\u5728\u540c\u4e00\u6bb5\u7535\u8def\uff1b\u2461\u8ba1\u7b97\u65f6\u5355\u4f4d\u8981\u7edf\u4e00\uff1b\u2462\u5df2\u77e5\u4efb\u610f\u7684\u4e09\u4e2a\u91cf\u90fd\u53ef\u4ee5\u6c42\u51fa\u7b2c\u56db\u4e2a\u91cf\u3002
6. \u8ba1\u7b97\u7535\u529f\u8fd8\u53ef\u7528\u4ee5\u4e0b\u516c\u5f0f\uff1aW=I2Rt \uff1bW=Pt\uff1bW=UQ\uff08Q\u662f\u7535\u91cf\uff09\uff1b
7. \u7535\u529f\u7387\uff08P\uff09\uff1a\u7535\u6d41\u5728\u5355\u4f4d\u65f6\u95f4\u5185\u505a\u7684\u529f\u3002\u5355\u4f4d\u6709\uff1a\u74e6\u7279(\u56fd\u9645)\uff1b\u5e38\u7528\u5355\u4f4d\u6709\uff1a\u5343\u74e6
8. \u8ba1\u7b97\u7535\u529f\u7387\u516c\u5f0f\uff1a\uff08\u5f0f\u4e2d\u5355\u4f4dP\u2192\u74e6(w)\uff1bW\u2192\u7126\uff1bt\u2192\u79d2\uff1bU\u2192\u4f0f\uff08V\uff09\uff1bI\u2192\u5b89\uff08A\uff09
9\uff0e\u5229\u7528\u8ba1\u7b97\u65f6\u5355\u4f4d\u8981\u7edf\u4e00\uff0c\u2460\u5982\u679cW\u7528\u7126\u3001t\u7528\u79d2\uff0c\u5219P\u7684\u5355\u4f4d\u662f\u74e6\uff1b\u2461\u5982\u679cW\u7528\u5343\u74e6\u65f6\u3001t\u7528\u5c0f\u65f6\uff0c\u5219P\u7684\u5355\u4f4d\u662f\u5343\u74e6\u3002
10\uff0e\u8ba1\u7b97\u7535\u529f\u7387\u8fd8\u53ef\u7528\u53f3\u516c\u5f0f\uff1aP=I2R\u548cP=U2/R
11\uff0e\u989d\u5b9a\u7535\u538b\uff08U0\uff09\uff1a\u7528\u7535\u5668\u6b63\u5e38\u5de5\u4f5c\u7684\u7535\u538b\u3002
12\uff0e\u989d\u5b9a\u529f\u7387\uff08P0\uff09\uff1a\u7528\u7535\u5668\u5728\u989d\u5b9a\u7535\u538b\u4e0b\u7684\u529f\u7387\u3002
13\uff0e\u5b9e\u9645\u7535\u538b\uff08U\uff09\uff1a\u5b9e\u9645\u52a0\u5728\u7528\u7535\u5668\u4e24\u7aef\u7684\u7535\u538b\u3002
14\uff0e\u5b9e\u9645\u529f\u7387\uff08P\uff09\uff1a\u7528\u7535\u5668\u5728\u5b9e\u9645\u7535\u538b\u4e0b\u7684\u529f\u7387\u3002
\u5f53U > U0\u65f6\uff0c\u5219P > P0 \uff1b\u706f\u5f88\u4eae\uff0c\u6613\u70e7\u574f\u3002
\u5f53U < U0\u65f6\uff0c\u5219P < P0 \uff1b\u706f\u5f88\u6697\uff0c
\u5f53U = U0\u65f6\uff0c\u5219P = P0 \uff1b\u6b63\u5e38\u53d1\u5149\u3002
\uff08\u540c\u4e00\u4e2a\u7535\u963b\u6216\u706f\u70ae\uff0c\u63a5\u5728\u4e0d\u540c\u7684\u7535\u538b\u4e0b\u4f7f\u7528\uff0c\u5219\u6709\uff1b\u5982\uff1a\u5f53\u5b9e\u9645\u7535\u538b\u662f\u989d\u5b9a\u7535\u538b\u7684\u4e00\u534a\u65f6\uff0c\u5219\u5b9e\u9645\u529f\u7387\u5c31\u662f\u989d\u5b9a\u529f\u7387\u76841/4\u3002\u4f8b\u201c220V100W\u201d\u662f\u8868\u793a\u989d\u5b9a\u7535\u538b\u662f220\u4f0f\uff0c\u989d\u5b9a\u529f\u7387\u662f100\u74e6\u7684\u706f\u6ce1\u5982\u679c\u63a5\u5728110\u4f0f\u7684\u7535\u8def\u4e2d\uff0c\u5219\u5b9e\u9645\u529f\u7387\u662f25\u74e6\u3002\uff09
15\uff0e\u7126\u8033\u5b9a\u5f8b\uff1a\u7535\u6d41\u901a\u8fc7\u5bfc\u4f53\u4ea7\u751f\u7684\u70ed\u91cf\uff0c\u4e0e\u7535\u6d41\u7684\u5e73\u65b9\u6210\u6b63\u6bd4\uff0c\u4e0e\u5bfc\u4f53\u7684\u7535\u963b\u6210\u6b63\u6bd4\uff0c\u4e0e\u901a\u7535\u65f6\u95f4\u6210\u6b63\u6bd4\u3002
16\uff0e\u7126\u8033\u5b9a\u5f8b\u516c\u5f0f\uff1aQ=I2Rt \uff0c\uff08\u5f0f\u4e2d\u5355\u4f4dQ\u2192\u7126\uff1bI\u2192\u5b89(A)\uff1bR\u2192\u6b27(\u03a9)\uff1bt\u2192\u79d2\u3002\uff09
17\uff0e\u5f53\u7535\u6d41\u901a\u8fc7\u5bfc\u4f53\u505a\u7684\u529f(\u7535\u529f)\u5168\u90e8\u7528\u6765\u4ea7\u751f\u70ed \u91cf(\u7535\u70ed)\uff0c\u5219\u6709W=Q\uff0c\u53ef\u7528\u7535\u529f\u516c\u5f0f\u6765\u8ba1\u7b97Q\u3002\uff08\u5982\u7535\u70ed\u5668\uff0c\u7535\u963b\u5c31\u662f\u8fd9\u6837\u7684\u3002\uff09
1\uff0e\u5bb6\u5ead\u7535\u8def\u7531\uff1a\u8fdb\u6237\u7ebf\u2192\u7535\u80fd\u8868\u2192\u603b\u5f00\u5173\u2192\u4fdd\u9669\u76d2\u2192\u7528\u7535\u5668\u3002
2\uff0e\u4e24\u6839\u8fdb\u6237\u7ebf\u662f\u706b\u7ebf\u548c\u96f6\u7ebf\uff0c\u5b83\u4eec\u4e4b\u95f4\u7684\u7535\u538b\u662f220\u4f0f\uff0c\u53ef\u7528\u6d4b\u7535\u7b14\u6765\u5224\u522b\u3002\u5982\u679c\u6d4b\u7535\u7b14\u4e2d\u6c16\u7ba1\u53d1\u5149\uff0c\u5219\u6240\u6d4b\u7684\u662f\u706b\u7ebf\uff0c\u4e0d\u53d1\u5149\u7684\u662f\u96f6\u7ebf\u3002
3\uff0e\u6240\u6709\u5bb6\u7528\u7535\u5668\u548c\u63d2\u5ea7\u90fd\u662f\u5e76\u8054\u7684\u3002\u800c\u5f00\u5173\u5219\u8981\u4e0e\u5b83\u6240\u63a7\u5236\u7684\u7528\u7535\u5668\u4e32\u8054\u3002
4\uff0e\u4fdd\u9669\u4e1d\uff1a\u662f\u7528\u7535\u963b\u7387\u5927\uff0c\u7194\u70b9\u4f4e\u7684\u94c5\u9511\u5408\u91d1\u5236\u6210\u3002\u5b83\u7684\u4f5c\u7528\u662f\u5f53\u7535\u8def\u4e2d\u6709\u8fc7\u5927\u7684\u7535\u6d41\u65f6\uff0c\u4fdd\u9669\u4ea7\u751f\u8f83\u591a\u7684\u70ed\u91cf\uff0c\u4f7f\u5b83\u7684\u6e29\u5ea6\u8fbe\u5230\u7194\u70b9\uff0c\u4ece\u800c\u7194\u65ad\uff0c\u81ea\u52a8\u5207\u65ad\u7535\u8def\uff0c\u8d77\u5230\u4fdd\u9669\u7684\u4f5c\u7528\u3002
5\uff0e\u5f15\u8d77\u7535\u8def\u4e2d\u7535\u6d41\u8fc7\u5927\u7684\u539f\u56e0\u6709\u4e24\u4e2a\uff1a\u4e00\u662f\u7535\u8def\u53d1\u751f\u77ed\u8def\uff1b\u4e8c\u662f\u7528\u7535\u5668\u603b\u529f\u7387\u8fc7\u5927\u3002
6\uff0e\u5b89\u5168\u7528\u7535\u7684\u539f\u5219\u662f\uff1a\u2460\u4e0d\u63a5\u89e6\u4f4e\u538b\u5e26\u7535\u4f53\uff1b\u2461\u4e0d\u9760\u8fd1\u9ad8\u538b\u5e26\u7535\u4f53\u3002
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\u7b2c\u5341\u516d\u7ae0 \u7535\u8f6c\u6362\u78c1\u77e5\u8bc6\u5f52\u7eb3
1\uff0e\u78c1\u6027\uff1a\u7269\u4f53\u5438\u5f15\u94c1\u3001\u954d\u3001\u94b4\u7b49\u7269\u8d28\u7684\u6027\u8d28\u3002
2\uff0e\u78c1\u4f53\uff1a\u5177\u6709\u78c1\u6027\u7684\u7269\u4f53\u53eb\u78c1\u4f53\u3002\u5b83\u6709\u6307\u5411\u6027\uff1a\u6307\u5357\u5317\u3002
3\uff0e\u78c1\u6781\uff1a\u78c1\u4f53\u4e0a\u78c1\u6027\u6700\u5f3a\u7684\u90e8\u5206\u53eb\u78c1\u6781\u3002
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\u2461 \u78c1\u6781\u95f4\u7684\u4f5c\u7528\uff1a\u540c\u540d\u78c1\u6781\u4e92\u76f8\u6392\u65a5\uff0c\u5f02\u540d\u78c1\u6781\u4e92\u76f8\u5438\u5f15\u3002
4\uff0e\u78c1\u5316\uff1a\u4f7f\u539f\u6765\u6ca1\u6709\u78c1\u6027\u7684\u7269\u4f53\u5e26\u4e0a\u78c1\u6027\u7684\u8fc7\u7a0b\u3002
5\uff0e\u78c1\u4f53\u5468\u56f4\u5b58\u5728\u7740\u78c1\u573a\uff0c\u78c1\u6781\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u5c31\u662f\u901a\u8fc7\u78c1\u573a\u53d1\u751f\u7684\u3002
6\uff0e\u78c1\u573a\u7684\u57fa\u672c\u6027\u8d28\uff1a\u5bf9\u5165\u5176\u4e2d\u7684\u78c1\u4f53\u4ea7\u751f\u78c1\u529b\u7684\u4f5c\u7528\u3002
7\uff0e\u78c1\u573a\u7684\u65b9\u5411\uff1a\u5728\u78c1\u573a\u4e2d\u7684\u67d0\u4e00\u70b9\uff0c\u5c0f\u78c1\u9488\u9759\u6b62\u65f6\u5317\u6781\u6240\u6307\u7684\u65b9\u5411\u5c31\u662f\u8be5\u70b9\u7684\u78c1\u573a\u65b9\u5411\u3002
8\uff0e\u78c1\u611f\u7ebf\uff1a\u63cf\u8ff0\u78c1\u573a\u7684\u5f3a\u5f31\u548c\u65b9\u5411\u800c\u5047\u60f3\u7684\u66f2\u7ebf\u3002\u78c1\u4f53\u5468\u56f4\u7684\u78c1\u611f\u7ebf\u662f\u4ece\u5b83\u5317\u6781\u51fa\u6765\uff0c\u56de\u5230\u5357\u6781\u3002\uff08\u78c1\u611f\u7ebf\u662f\u4e0d\u5b58\u5728\u7684\uff0c\u7528\u865a\u7ebf\u8868\u793a\uff0c\u4e14\u4e0d\u76f8\u4ea4\uff09
9\uff0e\u78c1\u573a\u4e2d\u67d0\u70b9\u7684\u78c1\u573a\u65b9\u5411\u3001\u78c1\u611f\u7ebf\u65b9\u5411\u3001\u5c0f\u78c1\u9488\u9759\u6b62\u65f6\u5317\u6781\u6307\u7684\u65b9\u5411\u76f8\u540c\u3002
10\uff0e\u5730\u78c1\u7684\u5317\u6781\u5728\u5730\u7406\u4f4d\u7f6e\u7684\u5357\u6781\u9644\u8fd1\uff1b\u800c\u5730\u78c1\u7684\u5357\u6781\u5219\u5728\u5730\u7406\u4f4d\u7f6e\u7684\u5317\u6781\u9644\u8fd1\u3002(\u5730\u78c1\u7684\u5357\u5317\u6781\u4e0e\u5730\u7406\u7684\u5357\u5317\u6781\u5e76\u4e0d\u91cd\u5408\uff0c\u5b83\u4eec\u7684\u4ea4\u89d2\u79f0\u78c1\u504f\u89d2\uff0c\u8fd9\u662f\u6211\u56fd\u5b66\u8005\uff1a\u6c88\u62ec\u6700\u65e9\u8bb0\u8ff0\u8fd9\u4e00\u73b0\u8c61\u3002\uff09
11\uff0e\u5965\u65af\u7279\u5b9e\u9a8c\u8bc1\u660e\uff1a\u901a\u7535\u5bfc\u7ebf\u5468\u56f4\u5b58\u5728\u78c1\u573a\u3002
12\uff0e\u5b89\u57f9\u5b9a\u5219\uff1a\u7528\u53f3\u624b\u63e1\u87ba\u7ebf\u7ba1\uff0c\u8ba9\u56db\u6307\u5f2f\u5411\u87ba\u7ebf\u7ba1\u4e2d\u7535\u6d41\u65b9\u5411\uff0c\u5219\u5927\u62c7\u6307\u6240\u6307\u7684\u90a3\u7aef\u5c31\u662f\u87ba\u7ebf\u7ba1\u7684\u5317\u6781\uff08N\u6781\uff09\u3002
13\uff0e\u5b89\u57f9\u5b9a\u5219\u7684\u6613\u8bb0\u6613\u7528\uff1a\u5165\u7ebf\u89c1\uff0c\u624b\u6b63\u63e1\uff1b\u5165\u7ebf\u4e0d\u89c1\uff0c\u624b\u53cd\u63e1\u3002\u5927\u62c7\u6307\u6307\u7684\u4e00\u7aef\u662f\u5317\u6781(N\u6781)\u3002
14\uff0e\u901a\u7535\u87ba\u7ebf\u7ba1\u7684\u6027\u8d28\uff1a\u2460\u901a\u8fc7\u7535\u6d41\u8d8a\u5927\uff0c\u78c1\u6027\u8d8a\u5f3a\uff1b\u2461\u7ebf\u5708\u531d\u6570\u8d8a\u591a\uff0c\u78c1\u6027\u8d8a\u5f3a\uff1b\u2462\u63d2\u5165\u8f6f\u94c1\u82af\uff0c\u78c1\u6027\u5927\u5927\u589e\u5f3a\uff1b\u2463\u901a\u7535\u87ba\u7ebf\u7ba1\u7684\u6781\u6027\u53ef\u7528\u7535\u6d41\u65b9\u5411\u6765\u6539\u53d8\u3002
15\uff0e\u7535\u78c1\u94c1\uff1a\u5185\u90e8\u5e26\u6709\u94c1\u82af\u7684\u87ba\u7ebf\u7ba1\u5c31\u6784\u6210\u7535\u78c1\u94c1\u3002
16\uff0e\u7535\u78c1\u94c1\u7684\u7279\u70b9\uff1a\u2460\u78c1\u6027\u7684\u6709\u65e0\u53ef\u7531\u7535\u6d41\u7684\u901a\u65ad\u6765\u63a7\u5236\uff1b\u2461\u78c1\u6027\u7684\u5f3a\u5f31\u53ef\u7531\u6539\u53d8\u7535\u6d41\u5927\u5c0f\u548c\u7ebf\u5708\u7684\u531d\u6570\u6765\u8c03\u8282\uff1b\u2462\u78c1\u6781\u53ef\u7531\u7535\u6d41\u65b9\u5411\u6765\u6539\u53d8\u3002
17\uff0e\u7535\u78c1\u7ee7\u7535\u5668\uff1a\u5b9e\u8d28\u4e0a\u662f\u4e00\u4e2a\u5229\u7528\u7535\u78c1\u94c1\u6765\u63a7\u5236\u7684\u5f00\u5173\u3002\u5b83\u7684\u4f5c\u7528\u53ef\u5b9e\u73b0\u8fdc\u8ddd\u79bb\u64cd\u4f5c\uff0c\u5229\u7528\u4f4e\u7535\u538b\u3001\u5f31\u7535\u6d41\u6765\u63a7\u5236\u9ad8\u7535\u538b\u3001\u5f3a\u7535\u6d41\u3002\u8fd8\u53ef\u5b9e\u73b0\u81ea\u52a8\u63a7\u5236\u3002
18\uff0e\u7535\u78c1\u611f\u5e94\uff1a\u95ed\u5408\u7535\u8def\u7684\u4e00\u90e8\u5206\u5bfc\u4f53\u5728\u78c1\u573a\u4e2d\u505a\u5207\u5272\u78c1\u611f\u7ebf\u8fd0\u52a8\u65f6\uff0c\u5bfc\u4f53\u4e2d\u5c31\u4ea7\u751f\u7535\u6d41\uff0c\u8fd9\u79cd\u73b0\u8c61\u53eb\u7535\u78c1\u611f\u5e94\uff0c\u4ea7\u751f\u7684\u7535\u6d41\u53eb\u611f\u5e94\u7535\u6d41\u3002
19. \u4ea7\u751f\u611f\u751f\u7535\u6d41\u7684\u6761\u4ef6\uff1a\u2460\u7535\u8def\u5fc5\u987b\u95ed\u5408\uff1b\u2461\u53ea\u662f\u7535\u8def\u7684\u4e00\u90e8\u5206\u5bfc\u4f53\u5728\u78c1\u573a\u4e2d\uff1b\u2462\u8fd9\u90e8\u5206\u5bfc\u4f53\u505a\u5207\u5272\u78c1\u611f\u7ebf\u8fd0\u52a8\u3002
20. \u611f\u5e94\u7535\u6d41\u7684\u65b9\u5411\uff1a\u8ddf\u5bfc\u4f53\u8fd0\u52a8\u65b9\u5411\u548c\u78c1\u611f\u7ebf\u65b9\u5411\u6709\u5173\u3002
21. \u7535\u78c1\u611f\u5e94\u73b0\u8c61\u4e2d\u662f\u673a\u68b0\u80fd\u8f6c\u5316\u4e3a\u7535\u80fd\u3002
22. \u53d1\u7535\u673a\u7684\u539f\u7406\u662f\u6839\u636e\u7535\u78c1\u611f\u5e94\u73b0\u8c61\u5236\u6210\u7684\u3002\u4ea4\u6d41\u53d1\u7535\u673a\u4e3b\u8981\u7531\u5b9a\u5b50\u548c\u8f6c\u5b50\u3002
23. \u9ad8\u538b\u8f93\u7535\u7684\u539f\u7406\uff1a\u4fdd\u6301\u8f93\u51fa\u529f\u7387\u4e0d\u53d8\uff0c\u63d0\u9ad8\u8f93\u7535\u7535\u538b\uff0c\u540c\u65f6\u51cf\u5c0f\u7535\u6d41\uff0c\u4ece\u800c\u51cf\u5c0f\u7535\u80fd\u7684\u635f\u5931\u3002
24. \u78c1\u573a\u5bf9\u7535\u6d41\u7684\u4f5c\u7528\uff1a\u901a\u7535\u5bfc\u7ebf\u5728\u78c1\u573a\u4e2d\u8981\u53d7\u5230\u78c1 \u529b\u7684\u4f5c\u7528\u3002\u662f\u7531\u7535\u80fd\u8f6c\u5316\u4e3a\u673a\u68b0\u80fd\u3002\u5e94\u7528\u662f\u5236\u6210\u7535\u52a8\u673a\u3002
25. \u901a\u7535\u5bfc\u4f53\u5728\u78c1\u573a\u4e2d\u53d7\u529b\u65b9\u5411\uff1a\u8ddf\u7535\u6d41\u65b9\u5411\u548c\u78c1\u611f \u7ebf\u65b9\u5411\u6709\u5173\u3002
26. \u76f4\u6d41\u7535\u52a8\u673a\u539f\u7406\uff1a\u662f\u5229\u7528\u901a\u7535\u7ebf\u5708\u5728\u78c1\u573a\u91cc\u53d7\u529b \u8f6c\u52a8\u7684\u539f\u7406\u5236\u6210\u7684\u3002
27\uff0e\u4ea4\u6d41\u7535\uff1a\u5468\u671f\u6027\u6539\u53d8\u7535\u6d41\u65b9\u5411\u7684\u7535\u6d41\u3002
28\uff0e\u76f4\u6d41\u7535\uff1a\u7535\u6d41\u65b9\u5411\u4e0d\u6539\u53d8\u7684\u7535\u6d41\u3002
2电阻：R=ρL/S
3欧姆定律：I＝U/R
4焦耳定律：
⑴Q＝I2Rt（普适公式)
⑵Q＝UIt＝Pt＝UQ电量＝U2t/R (纯电阻公式)
5串联电路：
⑴I＝I1＝I2
⑵U＝U1＋U2
⑶R＝R1＋R2
⑷U1/U2＝R1/R2 (分压公式)
⑸P1/P2＝R1/R2
6并联电路：
⑴I＝I1＋I2
⑵U＝U1＝U2
⑶1/R＝1/R1＋1/R2 [ R＝R1R2/(R1＋R2)]
⑷I1/I2＝R2/R1(分流公式)
⑸P1/P2＝R2/R1
7定值电阻：
⑴I1/I2＝U1/U2
⑵P1/P2＝I12/I22
⑶P1/P2＝U12/U22
8电功：
⑴W＝UIt＝Pt＝UQ (普适公式)
⑵W＝I^2Rt＝U^2t/R (纯电阻公式)
9电功率：
⑴P＝W/t＝UI (普适公式)
⑵P＝I2^R＝U^2/R (纯电阻公式)
建议去百度文库下载，这里有很全的初中物理电学知识点。
绛旓細鐢靛鏄鍒濅腑鐗╃悊闈炲父鍩虹鐨勪竴閮ㄥ垎锛屼笅闈㈡垜涓哄ぇ瀹鎬荤粨浜嗗垵涓鐗╃悊 鐢靛鐭ヨ瘑鐐 姹囨伙紝浠呬緵澶у鍙傝冦傜數瀛︾煡璇嗙偣 鐢佃嵎鐢佃嵎锛氱墿浣撴湁浜嗗惛寮曡交灏忕墿浣撶殑鎬ц川锛屾垜浠鐗╀綋甯︿簡鐢碉紝鎴栧甫浜嗙數鑽枫傛懇鎿﹁捣鐢碉細鎽╂摝杩囩殑鐗╀綋鍏锋湁鍚稿紩杞诲皬鐗╀綋鐨勭幇璞°傛懇鎿﹁捣鐢电殑鍘熷洜锛氬湪鎽╂摝杩囩▼涓紝鐢靛瓙浼氫粠涓涓墿浣撹浆绉诲埌鍙︿竴鐗╀綋锛...
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