物理，电学计算题（一定要用正规步骤解题） 物理电学计算题要过程
\u521d\u4e8c\u7269\u7406\u7535\u5b66\u8ba1\u7b97\u9898\uff0c\u8981\u6709\u7b54\u6848\u624d\u884c\u662f\u90a3\u79cd\u5927\u9898\uff0c\u6709\u8be6\u7ec6\u8fc7\u7a0b\u516b\u5e74\u7ea7\u671f\u672b\u7269\u7406\u8bd5\u5377
\u4e00 \u5355\u9879\u9009\u62e9\u9898\uff08\u6bcf\u98983\u5206\uff0c\u517124\u5206\uff09
1. \u51b3\u5b9a\u767d\u70bd\u706f\u660e\u4eae\u7a0b\u5ea6\u7684\u56e0\u7d20\u662f \uff08 \uff09
A \u706f\u6ce1\u7684\u7535\u963b B \u706f\u6ce1\u7684\u989d\u5b9a\u529f\u7387
C \u706f\u6ce1\u7684\u5b9e\u9645\u529f\u7387 D \u706f\u6ce1\u6d88\u8017\u7684\u7535\u80fd
2. \u4e0b\u5217\u8bbe\u5907\u4e0e\u7535\u78c1\u6ce2\u7684\u5e94\u7528\u6709\u5173\u7684\u662f \uff08 \uff09
A \u78c1\u60ac\u6d6e\u5217\u8f66 B \u7535\u78c1\u7ee7\u7535\u5668 C \u79fb\u52a8\u901a\u8baf\u8bbe\u5907 D \u7535\u78c1\u8d77\u91cd\u673a
3. \u5982\u56fe\u6240\u793a\uff0c\u95ed\u5408\u5f00\u5173S\uff0c\u706fL\u53d1\u5149\uff0c\u628a\u6ed1\u52a8\u53d8\u963b\u5668\u7684\u6ed1\u7247P\u5411\u53f3\u7aef\u79fb\u52a8\uff0c\u706fL\u7684\u4eae\u5ea6\u4e0e\u7535\u6d41\u8868\u793a\u6570\u7684\u53d8\u5316\u60c5\u51b5\u662f \uff08 \uff09
A \u706fL\u53d8\u4eae\uff0c\u7535\u6d41\u8868\u793a\u6570\u53d8\u5927 B \u706fL\u53d8\u6697\uff0c\u7535\u6d41\u8868\u793a\u6570\u53d8\u5c0f
C \u706fL\u53d8\u4eae\uff0c\u7535\u6d41\u8868\u793a\u6570\u53d8\u5c0f D \u706fL\u53d8\u6697\uff0c\u7535\u6d41\u8868\u793a\u6570\u4e0d\u53d8
4. \u5bb6\u5ead\u7535\u8def\u4e2d\u4f7f\u7528\u7684\u7535\u80fd\u8868\u662f\u4e13\u95e8\u7528\u6765\u6d4b\u91cf \uff08 \uff09
A \u7535\u538b\u7684\u5927\u5c0f B \u7535\u6d41\u7684\u5927\u5c0f C \u7535\u529f\u7387\u7684\u5927\u5c0f D \u7535\u529f\u7684\u591a\u5c11
5. \u8fd1\u5e74\u6765\uff0c\u6211\u5e02\u7535\u529b\u4f9b\u5e94\u7d27\u5f20\uff0c\u8282\u7ea6\u7528\u7535\u5c24\u4e3a\u91cd\u8981\uff0c\u4e0b\u5217\u4e0d\u5c5e\u4e8e\u8282\u7ea6\u7528\u7535\u7684\u662f \uff08 \uff09
A \u7535\u89c6\u673a\u4e0d\u7528\u65f6\u5207\u65ad\u7535\u6e90 B \u79bb\u5f00\u6559\u5ba4\u968f\u624b\u5173\u706f
C \u590f\u5929\u7528\u7a7a\u8c03\u65f6\u628a\u6e29\u5ea6\u8c03\u5f97\u5f88\u4f4e D \u5c3d\u91cf\u5c11\u5f00\u542f\u7535\u51b0\u7bb1\u95e8
6. \u5c0f\u5218\u5bb6\u91cc\u7684\u7a7a\u6c14\u5f00\u5173\u6709\u4e00\u5929\u7a81\u7136\u8df3\u8d77\uff0c\u4ed6\u8d76\u7d27\u5173\u6389\u5bb6\u91cc\u7684\u7528\u7535\u5668\uff0c\u7136\u540e\u518d\u53bb\u5c06\u7a7a\u6c14\u5f00\u5173\u590d\u4f4d\uff0c\u4f46\u5f00\u5173\u53c8\u7acb\u5373\u8df3\u8d77\uff0c\u8fd9\u53ef\u80fd\u662f \uff08 \uff09
A \u7535\u8def\u4e2d\u7528\u7535\u5668\u603b\u529f\u7387\u8fc7\u5927 B \u7535\u8def\u4e2d\u6709\u65ad\u8def\u73b0\u8c61
C \u7535\u8def\u4e2d\u6709\u77ed\u8def\u73b0\u8c61 D \u7a7a\u6c14\u5f00\u5173\u7684\u989d\u5b9a\u7535\u6d41\u592a\u5c0f
7. \u78c1\u6027\u6c34\u96f7\u662f\u7528\u4e00\u4e2a\u53ef\u4ee5\u7ed5\u8f74\u8f6c\u52a8\u7684\u5c0f\u78c1\u9488\u6765\u63a7\u5236\u8d77\u7206\u7535\u8def\u7684\uff0c\u519b\u8230\u88ab\u5730\u78c1\u573a\u78c1\u5316\u540e\u5c31\u53d8\u6210\u4e86\u4e00\u4e2a\u6d6e\u52a8\u7684\u78c1\u4f53\uff0c\u5f53\u519b\u8230\u63a5\u8fd1\u6c34\u96f7\u65f6\uff0c\u5c31\u4f1a\u5f15\u8d77\u6c34\u96f7\u7684\u7206\u70b8\uff0c\u8fd9\u662f\u56e0\u4e3a\uff08 \uff09
A \u7535\u78c1\u611f\u5e94\u73b0\u8c61 B \u78c1\u6781\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u89c4\u5f8b
C \u7535\u8377\u95f4\u7684\u76f8\u4e92\u4f5c\u7528\u89c4\u5f8b D \u78c1\u573a\u5bf9\u7535\u6d41\u7684\u4f5c\u7528\u539f\u7406
8. \u5982\u56fe\u6240\u793a\u7535\u8def\u4e2d\uff0c\u7535\u6e90\u7535\u538b\u6052\u4e3a24V\uff0c\u7535\u963b \uff0c\u4e24\u53ea\u7535\u6d41\u8868\u7684\u91cf\u7a0b\u5747\u4e3a0\uff5e0.6A\uff0c\u5f53\u95ed\u5408\u5f00\u5173\u65f6\uff0c\u4e24\u53ea\u7535\u6d41\u8868\u7684\u793a\u6570\u5747\u4e3a0.2A\uff0c\u82e5\u6545\u969c\u7531\u4e24\u53ea\u7535\u963b\u4e2d\u7684\u4e00\u4e2a\u5f15\u8d77\uff0c\u5219\u51fa\u73b0\u7684\u6545\u969c\u662f \uff08 \uff09
A \u65ad\u8def B \u77ed\u8def A \u65ad\u8def B \u77ed\u8def
\u4e8c \u586b\u7a7a\u9898\uff08\u6bcf\u7a7a1\u5206\uff0c\u517120\u5206\uff09
9. \u6211\u56fd\u5bb6\u5ead\u7535\u8def\u7684\u7535\u538b\u662f---------V\uff0c\u4e0d\u9ad8\u4e8e---------V\u7684\u7535\u538b\u5bf9\u4eba\u4f53\u624d\u662f\u5b89\u5168\u7684\u3002
10. \u771f\u7a7a\u4e2d\u4e0d\u540c\u9891\u7387\u7684\u7535\u78c1\u6ce2\u4f20\u64ad\u901f\u5ea6\u5747\u4e3a----------------------m/s\uff0c\u628a\u79fb\u52a8\u7535\u8bddA\u653e\u5165\u4e00\u5bc6\u5c01\u7f69\u5185\uff0c\u628a\u7f69\u5185\u62bd\u6210\u771f\u7a7a\uff0c\u7528\u53e6\u4e00\u7535\u8bddB\u62e8\u6253A\uff0c\u5219A---------\u6536\u5230\u4fe1\u606f\u3002
11. \u7535\u70ed\u5b75\u5375\u5668\u3001\u98de\u884c\u5458\u7684\u4fdd\u6696\u8863\u90fd\u662f\u5229\u7528\u4e86\u7535\u6d41\u7684-----------\u6548\u5e94\uff0c\u7535\u94c3\u5229\u7528\u4e86\u7535\u6d41\u7684---------\u6548\u5e94\u3002
12. \u5728\u5bb6\u5ead\u7535\u8def\u4e2d\uff0c\u5de5\u4f5c\u7684\u7528\u7535\u5668\u589e\u591a\uff0c\u5e72\u8def\u4e2d\u7684\u7535\u6d41\u53d8------------\uff0c\u603b\u529f\u7387\u53d8-----------\uff0c\u603b\u7535\u963b\u53d8-----------\u3002
13. \u5728\u5730\u7403\u7684\u5468\u56f4\u53ea\u8981---------------\u9897\u536b\u661f\u5c31\u53ef\u5b9e\u73b0\u5168\u7403\u901a\u4fe1\u3002
14. \u4e00\u4e2a\u5bfc\u4f53\u4e24\u7aef\u7684\u7535\u538b\u4e3a4V\uff0c\u901a\u8fc7\u5b83\u7684\u7535\u6d41\u4e3a0.5A\uff0c\u8be5\u5bfc\u4f53\u7684\u7535\u963b\u4e3a----------\u3002\u5f53\u5bfc\u4f53\u4e24\u7aef\u4e0d\u52a0\u7535\u538b\u65f6\uff0c\u8be5\u5bfc\u4f53\u7684\u7535\u963b\u4e3a---------------\u3002
15. \u4e00\u53ea\u201cPZ220---100\u201d\u7684\u706f\u6ce1\uff0c\u706f\u4e1d\u7684\u7535\u963b\u4e3a-----------------\uff0c1\u5ea6\u7535\u53ef\u4f9b\u5b83\u5de5\u4f5c--------\u5c0f\u65f6\u3002
16. \u6709\u4e00\u4e2a\u7535\u94c3\uff0c\u6807\u6709\u201c10 6V\u201d\u5b57\u6837\uff0c\u73b0\u53ea\u6709\u4e00\u4e2a\u7535\u538b\u4e3a9V\u7684\u7535\u6e90\uff0c\u4e3a\u4f7f\u7535\u94c3\u6b63\u5e38\u5de5\u4f5c\uff0c\u5e94\u7ed9\u5b83\u4e32\u8054\u4e00\u4e2a\u963b\u503c\u4e3a-------------\u7684\u7535\u963b\u3002
17. \u5982\u56fe\u6240\u793a\u4e3a\u67d0\u79cd\u8c03\u5149\u578b\u53f0\u706f\u4e2d\u4f7f\u7528\u7684\u7535\u4f4d\u5668\u793a\u610f\u56fe\uff0cP\u4e3a\u6ed1\u7247\uff0c\u5c06\u7532\u56fe\u7535\u4f4d\u5668\u8fde\u5165\u4e59\u56fe\u6240\u793a\u7535\u8def\u4e2d\u7684M\u3001N\u4e24\u70b9\uff0c\u8981\u6c42\u987a\u65f6\u9488\u8f6c\u52a8\u65cb\u94ae\u53ef\u4f7f\u706f\u6ce1\u4eae\u5ea6\u589e\u52a0\uff0c\u5219\u5e94\u5c06\u7535\u4f4d\u5668\u7684--------------\u548c-------------\u8fde\u5165\u7535\u8def\u4e2d\u3002
18. \u5b66\u4e86\u7535\u5b66\u77e5\u8bc6\u540e\uff0c\u674e\u9633\u5c06\u7535\u706f\u7684\u5f00\u5173\u65ad\u5f00\uff0c\u4ece\u5f00\u5173\u5185\u5f15\u51fa\u4e24\u6839\u7535\u7ebf\u63a5\u5728\u4e00\u4e2a\u63d2\u5ea7\u4e0a\uff0c\u7136\u540e\u5c06\u53f0\u706f\u7684\u63d2\u5934\u63d2\u5165\u63d2\u5ea7\uff0c\u53f0\u706f---------------\u6b63\u5e38\u53d1\u5149\u3002\uff08\u586b\u201c\u80fd\u201d\u6216\u201c\u4e0d\u80fd\u201d\uff09
19. \u4e0b\u8868\u6240\u793a\u7684\u662f\u67d0\u7535\u51b0\u7bb1\u7684\u4e3b\u8981\u6280\u672f\u53c2\u6570
\u4f7f\u7528\u73af\u5883\u6e29\u5ea6 \u989d\u5b9a\u7535\u538b \u989d\u5b9a\u529f\u7387 \u8017\u7535\u91cf
10\uff5e38\u00b0 220V 150W 0.9kw•h/24h
\u8be5\u7535\u51b0\u7bb1\u6b63\u5e38\u5de5\u4f5c10\u5929\u540e\u7528\u7535-------------kw•h\uff0c\u5982\u679c\u7535\u51b0\u7bb1\u6bcf\u6b21\u542f\u52a8\u53ea\u5de5\u4f5c15min\uff0c\u90a3\u4e48\u8be5\u7535\u51b0\u7bb1\u4e00\u663c\u591c\u7ea6\u542f\u52a8--------------\u6b21\u3002
\u4e09 \u4f5c\u56fe\u4e0e\u5b9e\u9a8c\u9898\uff08\u517120\u5206\uff09
20. \u5982\u56fe\u6240\u793a\uff0c\u5f53\u5f00\u5173S\u95ed\u5408\u65f6\uff0c\u901a\u7535\u87ba\u7ebf\u7ba1\u65c1\u7684\u5c0f\u78c1\u9488\u5982\u56fe\u6240\u793a\u65b9\u5411\u8f6c\u52a8\uff0c\u5219\u901a\u7535\u87ba\u7ebf\u7ba1\u7684\u5de6\u7aef\u4e3a---------\u6781\uff0c\u7535\u6e90\u5de6\u7aef\u4e3a----------\u6781\uff0c\u5f53\u56fe\u4e2d\u7684\u5c0f\u6ed1\u7247\u5411\u5de6\u6ed1\u52a8\u65f6\uff0c\u5c0f\u78c1\u9488\u53d7\u5230\u7684\u78c1\u573a\u529b--------------\u3002\uff08\u9009\u586b\u201c\u53d8\u5927\u201d\u3001\u201c\u53d8\u5c0f\u201d\u6216\u201c\u4e0d\u53d8\u201d\uff09\uff083\u5206\uff09
21. \u5728\u6d4b\u5b9a\u201c\u5c0f\u706f\u6ce1\u7684\u529f\u7387\u5b9e\u9a8c\u201d\u4e2d\uff1a
1\uff09 \u4f9d\u636e\u7684\u5b9e\u9a8c\u539f\u7406\u662f------------------\uff081\u5206\uff09
2\uff09 \u5c0f\u660e\u540c\u5b66\u9009\u7528\u7684\u5c0f\u706f\u6ce1\u7684\u989d\u5b9a\u7535\u538b\u4e3a2.5V\uff0c\u7535\u963b\u7ea6\u4e3a8 \uff0c\u7535\u6e90\u4e3a----------\u8282\u5e72\u7535\u6c60\u4e32\u8054\u7ec4\u6210\uff0c\u7535\u6d41\u8868\u5e94\u9009\u7528---------\u91cf\u7a0b\u3002\u7535\u538b\u8868\u5e94\u9009\u7528--------\u91cf\u7a0b\u3002\uff083\u5206\uff09
3\uff09 \u753b\u51fa\u5b9e\u9a8c\u7535\u8def\u56fe\u3002\uff083\u5206\uff09
4\uff09 \u8fde\u63a5\u7535\u8def\u65f6\u5f00\u5173\u5e94-----------------\uff0c\u6b63\u786e\u8fde\u597d\u7535\u8def\u540e\uff0c\u95ed\u5408\u5f00\u5173\u524d\u5e94\u628a\u6ed1\u52a8\u53d8\u963b\u5668\u6ed1\u7247\u7684\u4f4d\u7f6e\u8c03\u5230------------------\u3002\uff082\u5206\uff09
5\uff09 \u66e6\u5a1c\u540c\u5b66\u9519\u628a\u7535\u538b\u8868\u3001\u7535\u6d41\u8868\u4f4d\u7f6e\u63a5\u53cd\uff0c\u5219\u4f1a\u51fa\u73b0\u7684\u60c5\u51b5\u662f\uff1a\u7535\u538b\u8868\u6709\u793a\u6570\uff0c\u7535\u6d41\u8868---------------------\uff0c\u5c0f\u706f\u6ce1-------------------\u3002\uff082\u5206\uff09
6\uff09 \u5929\u6d69\u540c\u5b66\u5b9e\u9a8c\u65f6\uff0c\u6240\u7528\u7684\u7535\u538b\u8868\u91cf\u7a0b\u4e5f\u662f0\uff5e3V\uff0c\u4f46\u523b\u5ea6\u6a21\u7cca\u4e0d\u6e05\uff0c\u65e0\u6cd5\u76f4\u63a5\u8bfb\u53d6\u5b9e\u9a8c\u6570\u636e\uff0c\u5374\u80fd\u4ece0\uff5e15V\u6863\u7684\u523b\u5ea6\u7ebf\u770b\u51fa\u6307\u9488\u505c\u572811.5V\u5904\uff0c\u5219\u52a0\u5728\u706f\u6ce1\u4e24\u7aef\u7684\u5b9e\u9645\u7535\u538b\u4e3a---------------V\u3002\uff082\u5206\uff09
7\uff09 \u8096\u5e73\u540c\u5b66\u8fde\u63a5\u597d\u5b9e\u9a8c\u7535\u8def\uff0c\u68c0\u67e5\u65e0\u8bef\u540e\uff0c\u95ed\u5408\u5f00\u5173\uff0c\u53d1\u73b0\u7535\u6d41\u8868\u6307\u9488\u504f\u8f6c\uff0c\u7535\u538b\u8868\u6307\u9488\u51e0\u4e4e\u4e0d\u52a8\uff0c\u8be5\u6545\u969c\u7684\u539f\u56e0\u662f--------------------------\u3002\uff082\u5206\uff09
8\uff09 \u5c0f\u4ead\u540c\u5b66\u7eaa\u5f55\u4e86\u5b9e\u9a8c\u6570\u636e\uff0c\u901a\u8fc7\u6570\u636e\u5206\u6790\uff0c\u53d1\u73b0\u4e09\u6b21\u5b9e\u9a8c\u706f\u4e1d\u7684\u7535\u963b\u5e76\u4e0d\u76f8\u540c\uff0c\u8fd9\u662f\u56e0\u4e3a------------------------\u3002\uff082\u5206\uff09
\u56db \u8ba1\u7b97\u9898\uff08\u6bcf\u98986\u5206\uff0c\u517112\u5206\uff09
22. \u4e00\u4e2a\u6807\u6709\u201c220V 550W\u201d\u7684\u7535\u6c34\u58f6\uff0c\u5728\u989d\u5b9a\u7535\u538b\u4e0b\u5de5\u4f5c\uff0c\u6c42\uff1a
1\uff09 \u7535\u6c34\u58f6\u6b63\u5e38\u5de5\u4f5c\u65f6\u901a\u8fc7\u5b83\u7684\u7535\u6d41
2\uff09 \u901a\u75356min\uff0c\u7535\u6c34\u58f6\u6d88\u8017\u7684\u7535\u80fd\u3002
23. \u5e02\u573a\u4e0a\u6709\u4e00\u79cd\u53cc\u80fd\u6e90\u592a\u9633\u80fd\u70ed\u6c34\u5668\uff0c\u6674\u5929\u5229\u7528\u592a\u9633\u80fd\uff0c\u9634\u5929\u53ef\u7528\u7535\u52a0\u70ed\uff0c\u5982\u56fe\u6240\u793a\u7535\u8def\u56fe\uff0c\u7535\u70ed\u7ba1R\u6807\u6709\u201c220V 1100W\u201d\u5b57\u6837\uff0c \u6784\u6210\u4fdd\u6e29\u7535\u8def\uff0c\u5f53S\u8fde\u52302\u65f6\uff0c\u7535\u70ed\u7ba1\u6b63\u5e38\u5de5\u4f5c\uff0c\u7ed9\u6c34\u7bb1\u91cc\u7684\u6c34\u52a0\u70ed\uff0c\u5f53S\u8fde\u52303\u65f6\uff0c\u70ed\u6c34\u5668\u5904\u4e8e\u4fdd\u6e29\u72b6\u6001\uff0c\u4fdd\u6e29\u529f\u7387\u4e3a100W\uff0c\u6c42 \u7684\u503c\u3002
\u4e94 \u63a2\u7a76\u4e0e\u5e94\u7528\uff08\u517124\u5206\uff09
24. \u67d0\u540c\u5b66\u4e70\u4e86\u4e00\u4e2a\u65b0\u578b\u7684\u5168\u5c01\u95ed\u954d\u9549\u7535\u6c60\uff0c\u4ece\u540d\u724c\u4e0a\u53ef\u77e5\u8be5\u7535\u6c60\u7684\u7535\u538b\u4e3a6V\uff0c\u6700\u5927\u53ef\u4f9b\u7535\u6d41\u4e3a1A\uff0c\u7535\u6c60\u7684\u4e24\u4e2a\u7535\u6781\u65c1\u53ea\u6d82\u4e86\u4e24\u79cd\u4e0d\u540c\u7684\u989c\u8272\uff0c\u5e76\u672a\u6807\u660e\u201c+\u201d\u201c\uff0d\u201d\u6781\uff0c\u8bf7\u4f60\u8bbe\u8ba1\u4e00\u4e2a\u5b9e\u9a8c\uff08\u6240\u7528\u5668\u6750\u4e0d\u9650\uff09\uff0c\u8fa8\u522b\u7535\u6c60\u7684\u6b63\u8d1f\u6781\u3002\uff084\u5206\uff09
25. \u67d0\u4e2d\u5b66\u7269\u7406\u8bfe\u5916\u5174\u8da3\u5c0f\u7ec4\u7684\u540c\u5b66\u60f3\u63a2\u7a76\u5f71\u54cd\u5bfc\u4f53\u7535\u963b\u5927\u5c0f\u7684\u56e0\u7d20\u3002\uff088\u5206\uff09
1\uff09 \u4ed6\u4eec\u60f3\u5230\u51fa\u7535\u5f71\u9662\u95e8\u8d8a\u7a84\uff0c\u901a\u9053\u8d8a\u957f\u5219\u4eba\u6d41\u8d8a\u96be\u901a\u8fc7\uff0c\u7531\u6b64\u731c\u60f3\u5bfc\u4f53\u7535\u963b\u5927\u5c0f\u53ef\u80fd\u4e0e\u5bfc\u4f53\u7684----------------\u548c------------------\u6709\u5173\u3002
2\uff09 \u4e8e\u662f\u4ed6\u4eec\u627e\u6765\u4e86\u540c\u79cd\u6750\u6599\u5236\u6210\u7684\u5404\u79cd\u957f\u5ea6\u548c\u6a2a\u622a\u9762\u79ef\u7684\u91d1\u5c5e\u4e1d\uff0c\u5e76\u6d4b\u91cf\u5b83\u4eec\u7684\u7535\u963b\uff0c\u5f97\u5230\u4e86\u4e0b\u8868\u6240\u793a\u7684\u6570\u636e\u3002
\u7269\u7406\u91cf 1 2 3 4 5 6 7 8 9
\u957f\u5ea6L/m 2.0 4.0 6.0 2.0 4.0 6.0 2.0 4.0 6.0 \u2026
\u6a2a\u622a\u9762\u79efS/mm2 1.0 1.0 1.0 2.0 2.0 2.0 4.0 4.0 4.0 \u2026
\u7535\u963b/\u03a9 2.0 4.0 6.0 1.0 2.0 3.0 0.5 1.0 1.0 \u2026
\u6bd4\u8f83\u8868\u4e2d\u7684\u7b2c1\u30012\u30013\u7ec4\u6570\u636e\uff0c\u4f60\u80fd\u5f97\u5230\u7684\u7ed3\u8bba\u662f----------------------------------
\u6bd4\u8f83\u8868\u4e2d\u7684\u7b2c1\u30014\u30017\u7ec4\u6570\u636e\uff0c\u4f60\u80fd\u5f97\u5230\u7684\u7ed3\u8bba\u662f---------------------------------
26. \u5982\u56fe\u662f\u7814\u7a76\u7535\u6d41\u4ea7\u751f\u70ed\u91cf\u4e0e\u7535\u963b\u7684\u5173\u7cfb\u7684\u90e8\u5206\u7535\u8def\uff0c\u4e24\u74f6\u4e2d\u7684\u7535\u963b\u4e1d\u4e32\u8054\uff0c\u662f\u4e3a\u4e86\u4f7f-----------------\u76f8\u540c\uff0c\u5df2\u77e5\u7532\u7535\u963b\u4e1d\u7684\u963b\u503c\u5c0f\u4e8e\u4e59\u7535\u963b\u4e1d\u7684\u963b\u503c\uff0c\u6bd4\u8f83\u5927\u5c0f\uff1a\u901a\u7535\u540e\uff0c\u4e24\u6839\u7535\u963b\u4e1d\u4e24\u7aef\u7684\u7535\u538b -------------- \uff0c\u4ea7\u751f\u7684\u70ed\u91cf ------------ \uff086\u5206\uff09
27. \u5b59\u5357\u540c\u5b66\u7528\u4e0b\u56fe\u6240\u793a\u7684\u7535\u8def\u7814\u7a76\u5bfc\u4f53\u4e2d\u7684\u7535\u6d41\u6839\u5bfc\u4f53\u7535\u963b\u7684\u5173\u7cfb\uff0c\u4ed6\u5148\u5c065 \u300115 \u300125 \u7684\u5b9a\u503c\u7535\u963bR\u63a5\u5165\u7535\u8defA\u3001B\u4e24\u70b9\u95f4\uff0c\u95ed\u5408\u5f00\u5173S\uff0c\u8bfb\u51fa\u7535\u6d41\u8868\u793a\u6570\uff08\u5982\u4e0b\u8868\uff09\u3002\u7531\u5b9e\u9a8c\u6570\u636e\u53ef\u770b\u51fa\u7535\u6d41I\u4e0e\u7535\u963bR\u5e76\u4e0d\u6210\u53cd\u6bd4\u3002
1\uff09 \u8be5\u5b9e\u9a8c\u9009\u9519\u4e86\u4ec0\u4e48\u5668\u6750\uff1f\u8bf7\u4f60\u8bf4\u51fa\u5e94\u6362\u7528\u7684\u5668\u6750\u3002
\u7b54\uff1a\u9009\u9519\u4e86------------------------\uff0c\u5e94\u6362\u7528-------------------\u3002
2\uff09 \u4e3a\u4fdd\u8bc1\u5b9e\u9a8c\u6b63\u786e\u8fdb\u884c\uff0c\u8fd8\u9700\u8981\u4ec0\u4e48\u4eea\u5668\uff1f
\u7b54\uff1a\u8fd8\u9700\u8981----------------------\u3002
\u7535\u963bR 5 15 25
\u7535\u6d41I 0.6 0.3 0.2
\u6709\u5173\u56fe\u793a\u53ca\u66f4\u591a\u4e60\u9898\u8bf7\u53c2\u9605(http://84831311.blog.sohu.com/42838918.html)
\u53c2\u8003\u8d44\u6599\uff1ahttp://84831311.blog.sohu.com/42838918.html
\u8fd9\u662f\u4e00\u4e2a\u6bd4\u8f83\u7efc\u5408\u7684\u9898\u76ee\uff0c\u6709\u529b\u5b66\uff0c\u7535\u5b66\uff0c\u70ed\u5b66\u7684\u8003\u5bdf\u70b9\u3002
1\uff0c\u716e\u996d\u4e2d\u7684\u6574\u4e2a\u7535\u996d\u9505\u8d28\u91cf\u4e3a\uff1aM=1.5kg+1kg=2.5kg
\u716e\u996d\u4e2d\u6574\u4e2a\u7535\u996d\u9505\u91cd\u91cf\u4e3a\uff1aG=M*g=2.5kg*10N/kg=25N\uff08\u8fd9\u91cc\u4e3a\u8ba1\u7b97\u65b9\u4fbf\u53d6g=10N/kg\uff09
\u716e\u996d\u4e2d\u6574\u4e2a\u7535\u996d\u9505\u5bf9\u5730\u9762\u538b\u5f3a\u4e3a\uff1aP=G/S=25N/0.002m^2=12.5kPa
2,\u5c0f\u654f\u505a\u5de5\u4e3a\uff1aW=G*h=25N*0.8m=20 J
3\uff0c\u7531P=U^2/R\u53ef\u77e5\uff0cS\u95ed\u5408\u65f6\u4e3a\u716e\u996d\u72b6\u6001\uff0c\u53ea\u6709R2\u63a5\u5165\u7535\u8def\u4e14P\u70ed=500W\uff1aS\u6253\u5f00\u65f6\u4e3a\u4fdd\u6e29\u72b6\u6001\uff0cR1,R2\u540c\u65f6\u63a5\u5165\u7535\u8def\u4e14P\u6e29=44W\uff1a
S\u95ed\u5408\uff1aR2=U^2/P\u70ed=220*220/500=96.8\u03a9
S\u65ad\u5f00\uff1aR1+R2=U^2/P\u6e29=220*220/44=1100\u03a9
I\u6e29=U/(R1+R2)=220/1100=0.1A
4,\u716e\u996d\u8fc7\u7a0b\u4e2d\uff0cT\u70ed=13*60+20=800 s
\u7535\u52a0\u70ed\u505a\u529f W\u7535\u70ed=\u03b7*P\u70ed*T\u70ed=0.82*500*800=328000 J
\u7c73\u996d\u716e\u996d\u9700\u8981\u70ed\u91cfQ\u70ed=C\u7c73\u996d*M\u996d*\u0394t=4000*1*\uff08100-20\uff09=320000 J
\u56e0\u6b64\u7535\u996d\u9505\u7684\u5b9e\u9645\u52a0\u70ed\u6548\u7387\uff1a\u03b7\u9505=Q\u70ed/W\u7535\u70ed*100%=320000/328000=97.56%
（1）5Kv电压输电时，线路上的电流为I1
P=500KW=500000W
I1=P/U1=500000W/5000V=100A
导线上消耗的电能：
W1=I1^2Rt=4800KW.h=4800×3.6×10^6J
t = 24h = 24×3600s
R=W1/ I1^2t=4800×3.6×10^6J/(100A)^2×24×3600s = 20Ω
（2）用20Kv电压输电时，同理可知，输出电线电流为：
I2 = P/U2 = 500000W/20000V = 25A
W2=I2^2Rt=（25A)^2×20Ω×24×3600s = 1.08×10^7J = 300KW.h
∴ 每天减少的经济损失为：(4800KW.h-300KW.h)×1.00元／KW.h =4500元
答：略。
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分析：
(1)∵ΔP＝I^2R线，
而I＝P总/U总＝500KW/5KV＝100A，
ΔP＝ΔW/t＝4800KW.h/24h＝200kw＝200000W
∴输电线路的电阻：R线＝ΔP/I^2＝200000W/(100A)^2＝20Ω
(2)∵若对输电设备进行改造，则I'＝P总/U'总＝500KW/20KV＝25A
线路损失功率：ΔP'＝I'^2R线＝(25A)^2×20Ω＝12500W＝12.5kW
∴线路上每天可减少经济损失：1.00元/度×ΔP't'＝1.00元/度×12.5kW×24h＝300元
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