高二物理电学电流公式推导
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1.\u4e24\u79cd\u7535\u8377\u3001\u7535\u8377\u5b88\u6052\u5b9a\u5f8b\u3001\u5143\u7535\u8377\uff1a(e\uff1d1.60\u00d710-19C\uff09\uff1b\u5e26\u7535\u4f53\u7535\u8377\u91cf\u7b49\u4e8e\u5143\u7535\u8377\u7684\u6574\u6570\u500d
2.\u5e93\u4ed1\u5b9a\u5f8b\uff1aF\uff1dkQ1Q2/r2\uff08\u5728\u771f\u7a7a\u4e2d\uff09\uff5bF:\u70b9\u7535\u8377\u95f4\u7684\u4f5c\u7528\u529b(N)\uff0ck:\u9759\u7535\u529b\u5e38\u91cfk\uff1d9.0\u00d7109N•m2/C2\uff0cQ1\u3001Q2:\u4e24\u70b9\u7535\u8377\u7684\u7535\u91cf(C)\uff0cr:\u4e24\u70b9\u7535\u8377\u95f4\u7684\u8ddd\u79bb(m)\uff0c\u65b9\u5411\u5728\u5b83\u4eec\u7684\u8fde\u7ebf\u4e0a\uff0c\u4f5c\u7528\u529b\u4e0e\u53cd\u4f5c\u7528\u529b\uff0c\u540c\u79cd\u7535\u8377\u4e92\u76f8\u6392\u65a5\uff0c\u5f02\u79cd\u7535\u8377\u4e92\u76f8\u5438\u5f15\uff5d
3.\u7535\u573a\u5f3a\u5ea6\uff1aE\uff1dF/q\uff08\u5b9a\u4e49\u5f0f\u3001\u8ba1\u7b97\u5f0f)\uff5bE:\u7535\u573a\u5f3a\u5ea6(N/C)\uff0c\u662f\u77e2\u91cf\uff08\u7535\u573a\u7684\u53e0\u52a0\u539f\u7406\uff09\uff0cq\uff1a\u68c0\u9a8c\u7535\u8377\u7684\u7535\u91cf(C)\uff5d
4.\u771f\u7a7a\u70b9\uff08\u6e90\uff09\u7535\u8377\u5f62\u6210\u7684\u7535\u573aE\uff1dkQ/r2 \uff5br\uff1a\u6e90\u7535\u8377\u5230\u8be5\u4f4d\u7f6e\u7684\u8ddd\u79bb\uff08m\uff09\uff0cQ\uff1a\u6e90\u7535\u8377\u7684\u7535\u91cf\uff5d
5.\u5300\u5f3a\u7535\u573a\u7684\u573a\u5f3aE\uff1dUAB/d \uff5bUAB:AB\u4e24\u70b9\u95f4\u7684\u7535\u538b(V)\uff0cd:AB\u4e24\u70b9\u5728\u573a\u5f3a\u65b9\u5411\u7684\u8ddd\u79bb(m)\uff5d
6.\u7535\u573a\u529b\uff1aF\uff1dqE \uff5bF:\u7535\u573a\u529b(N)\uff0cq:\u53d7\u5230\u7535\u573a\u529b\u7684\u7535\u8377\u7684\u7535\u91cf(C)\uff0cE:\u7535\u573a\u5f3a\u5ea6(N/C)\uff5d
7.\u7535\u52bf\u4e0e\u7535\u52bf\u5dee\uff1aUAB\uff1d\u03c6A-\u03c6B\uff0cUAB\uff1dWAB/q\uff1d-\u0394EAB/q
8.\u7535\u573a\u529b\u505a\u529f\uff1aWAB\uff1dqUAB\uff1dEqd\uff5bWAB:\u5e26\u7535\u4f53\u7531A\u5230B\u65f6\u7535\u573a\u529b\u6240\u505a\u7684\u529f(J)\uff0cq:\u5e26\u7535\u91cf(C)\uff0cUAB:\u7535\u573a\u4e2dA\u3001B\u4e24\u70b9\u95f4\u7684\u7535\u52bf\u5dee(V)(\u7535\u573a\u529b\u505a\u529f\u4e0e\u8def\u5f84\u65e0\u5173),E:\u5300\u5f3a\u7535\u573a\u5f3a\u5ea6,d:\u4e24\u70b9\u6cbf\u573a\u5f3a\u65b9\u5411\u7684\u8ddd\u79bb(m)\uff5d
9.\u7535\u52bf\u80fd\uff1aEA\uff1dq\u03c6A \uff5bEA:\u5e26\u7535\u4f53\u5728A\u70b9\u7684\u7535\u52bf\u80fd(J)\uff0cq:\u7535\u91cf(C)\uff0c\u03c6A:A\u70b9\u7684\u7535\u52bf(V)\uff5d
10.\u7535\u52bf\u80fd\u7684\u53d8\u5316\u0394EAB\uff1dEB-EA \uff5b\u5e26\u7535\u4f53\u5728\u7535\u573a\u4e2d\u4eceA\u4f4d\u7f6e\u5230B\u4f4d\u7f6e\u65f6\u7535\u52bf\u80fd\u7684\u5dee\u503c\uff5d
11.\u7535\u573a\u529b\u505a\u529f\u4e0e\u7535\u52bf\u80fd\u53d8\u5316\u0394EAB\uff1d-WAB\uff1d-qUAB (\u7535\u52bf\u80fd\u7684\u589e\u91cf\u7b49\u4e8e\u7535\u573a\u529b\u505a\u529f\u7684\u8d1f\u503c)
12.\u7535\u5bb9C\uff1dQ/U(\u5b9a\u4e49\u5f0f,\u8ba1\u7b97\u5f0f) \uff5bC:\u7535\u5bb9(F)\uff0cQ:\u7535\u91cf(C)\uff0cU:\u7535\u538b(\u4e24\u6781\u677f\u7535\u52bf\u5dee)(V)\uff5d
13.\u5e73\u884c\u677f\u7535\u5bb9\u5668\u7684\u7535\u5bb9C\uff1d\u03b5S/4\u03c0kd\uff08S:\u4e24\u6781\u677f\u6b63\u5bf9\u9762\u79ef\uff0cd:\u4e24\u6781\u677f\u95f4\u7684\u5782\u76f4\u8ddd\u79bb\uff0c\u03c9\uff1a\u4ecb\u7535\u5e38\u6570\uff09
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14.\u5e26\u7535\u7c92\u5b50\u5728\u7535\u573a\u4e2d\u7684\u52a0\u901f(Vo\uff1d0)\uff1aW\uff1d\u0394EK\u6216qU\uff1dmVt2/2\uff0cVt\uff1d(2qU/m)1/2
15.\u5e26\u7535\u7c92\u5b50\u6cbf\u5782\u76f4\u7535\u573a\u65b9\u5411\u4ee5\u901f\u5ea6Vo\u8fdb\u5165\u5300\u5f3a\u7535\u573a\u65f6\u7684\u504f\u8f6c(\u4e0d\u8003\u8651\u91cd\u529b\u4f5c\u7528\u7684\u60c5\u51b5\u4e0b)
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(1)\u4e24\u4e2a\u5b8c\u5168\u76f8\u540c\u7684\u5e26\u7535\u91d1\u5c5e\u5c0f\u7403\u63a5\u89e6\u65f6,\u7535\u91cf\u5206\u914d\u89c4\u5f8b:\u539f\u5e26\u5f02\u79cd\u7535\u8377\u7684\u5148\u4e2d\u548c\u540e\u5e73\u5206,\u539f\u5e26\u540c\u79cd\u7535\u8377\u7684\u603b\u91cf\u5e73\u5206\uff1b
(2)\u7535\u573a\u7ebf\u4ece\u6b63\u7535\u8377\u51fa\u53d1\u7ec8\u6b62\u4e8e\u8d1f\u7535\u8377,\u7535\u573a\u7ebf\u4e0d\u76f8\u4ea4,\u5207\u7ebf\u65b9\u5411\u4e3a\u573a\u5f3a\u65b9\u5411,\u7535\u573a\u7ebf\u5bc6\u5904\u573a\u5f3a\u5927,\u987a\u7740\u7535\u573a\u7ebf\u7535\u52bf\u8d8a\u6765\u8d8a\u4f4e,\u7535\u573a\u7ebf\u4e0e\u7b49\u52bf\u7ebf\u5782\u76f4\uff1b
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(4)\u7535\u573a\u5f3a\u5ea6\uff08\u77e2\u91cf\uff09\u4e0e\u7535\u52bf\uff08\u6807\u91cf\uff09\u5747\u7531\u7535\u573a\u672c\u8eab\u51b3\u5b9a,\u800c\u7535\u573a\u529b\u4e0e\u7535\u52bf\u80fd\u8fd8\u4e0e\u5e26\u7535\u4f53\u5e26\u7684\u7535\u91cf\u591a\u5c11\u548c\u7535\u8377\u6b63\u8d1f\u6709\u5173\uff1b
(5)\u5904\u4e8e\u9759\u7535\u5e73\u8861\u5bfc\u4f53\u662f\u4e2a\u7b49\u52bf\u4f53,\u8868\u9762\u662f\u4e2a\u7b49\u52bf\u9762,\u5bfc\u4f53\u5916\u8868\u9762\u9644\u8fd1\u7684\u7535\u573a\u7ebf\u5782\u76f4\u4e8e\u5bfc\u4f53\u8868\u9762\uff0c\u5bfc\u4f53\u5185\u90e8\u5408\u573a\u5f3a\u4e3a\u96f6,\u5bfc\u4f53\u5185\u90e8\u6ca1\u6709\u51c0\u7535\u8377,\u51c0\u7535\u8377\u53ea\u5206\u5e03\u4e8e\u5bfc\u4f53\u5916\u8868\u9762\uff1b
(6)\u7535\u5bb9\u5355\u4f4d\u6362\u7b97\uff1a1F\uff1d106\u03bcF\uff1d1012PF\uff1b
(7\uff09\u7535\u5b50\u4f0f(eV)\u662f\u80fd\u91cf\u7684\u5355\u4f4d,1eV\uff1d1.60\u00d710-19J\uff1b
(8)\u5176\u5b83\u76f8\u5173\u5185\u5bb9\uff1a\u9759\u7535\u5c4f\u853d\u3014\u89c1\u7b2c\u4e8c\u518cP101\u3015/\u793a\u6ce2\u7ba1\u3001\u793a\u6ce2\u5668\u53ca\u5176\u5e94\u7528\u3014\u89c1\u7b2c\u4e8c\u518cP114\u3015\u7b49\u52bf\u9762\u3014\u89c1\u7b2c\u4e8c\u518cP105\u3015\u3002 \u6052\u5b9a\u7535\u6d41
1.\u7535\u6d41\u5f3a\u5ea6\uff1aI\uff1dq/t\uff5bI:\u7535\u6d41\u5f3a\u5ea6(A\uff09\uff0cq:\u5728\u65f6\u95f4t\u5185\u901a\u8fc7\u5bfc\u4f53\u6a2a\u8f7d\u9762\u7684\u7535\u91cf(C\uff09\uff0ct:\u65f6\u95f4(s\uff09\uff5d
2.\u6b27\u59c6\u5b9a\u5f8b\uff1aI\uff1dU/R \uff5bI:\u5bfc\u4f53\u7535\u6d41\u5f3a\u5ea6(A)\uff0cU:\u5bfc\u4f53\u4e24\u7aef\u7535\u538b(V)\uff0cR:\u5bfc\u4f53\u963b\u503c(\u03a9)\uff5d
3.\u7535\u963b\u3001\u7535\u963b\u5b9a\u5f8b\uff1aR\uff1d\u03c1L/S\uff5b\u03c1:\u7535\u963b\u7387(\u03a9•m)\uff0cL:\u5bfc\u4f53\u7684\u957f\u5ea6(m)\uff0cS:\u5bfc\u4f53\u6a2a\u622a\u9762\u79ef(m2)\uff5d
4.\u95ed\u5408\u7535\u8def\u6b27\u59c6\u5b9a\u5f8b\uff1aI\uff1dE/(r+R)\u6216E\uff1dIr+IR\u4e5f\u53ef\u4ee5\u662fE\uff1dU\u5185+U\u5916
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5.\u7535\u529f\u4e0e\u7535\u529f\u7387\uff1aW\uff1dUIt\uff0cP\uff1dUI\uff5bW:\u7535\u529f(J)\uff0cU:\u7535\u538b(V)\uff0cI:\u7535\u6d41(A)\uff0ct:\u65f6\u95f4(s)\uff0cP:\u7535\u529f\u7387(W)\uff5d
6.\u7126\u8033\u5b9a\u5f8b\uff1aQ\uff1dI2Rt\uff5bQ:\u7535\u70ed(J)\uff0cI:\u901a\u8fc7\u5bfc\u4f53\u7684\u7535\u6d41(A)\uff0cR:\u5bfc\u4f53\u7684\u7535\u963b\u503c(\u03a9)\uff0ct:\u901a\u7535\u65f6\u95f4(s)\uff5d
7.\u7eaf\u7535\u963b\u7535\u8def\u4e2d:\u7531\u4e8eI\uff1dU/R,W\uff1dQ\uff0c\u56e0\u6b64W\uff1dQ\uff1dUIt\uff1dI2Rt\uff1dU2t/R
8.\u7535\u6e90\u603b\u52a8\u7387\u3001\u7535\u6e90\u8f93\u51fa\u529f\u7387\u3001\u7535\u6e90\u6548\u7387\uff1aP\u603b\uff1dIE\uff0cP\u51fa\uff1dIU\uff0c\u03b7\uff1dP\u51fa/P\u603b\uff5bI:\u7535\u8def\u603b\u7535\u6d41(A)\uff0cE:\u7535\u6e90\u7535\u52a8\u52bf(V)\uff0cU:\u8def\u7aef\u7535\u538b(V)\uff0c\u03b7\uff1a\u7535\u6e90\u6548\u7387\uff5d
9.\u7535\u8def\u7684\u4e32/\u5e76\u8054 \u4e32\u8054\u7535\u8def(P\u3001U\u4e0eR\u6210\u6b63\u6bd4) \u5e76\u8054\u7535\u8def(P\u3001I\u4e0eR\u6210\u53cd\u6bd4)
\u7535\u963b\u5173\u7cfb(\u4e32\u540c\u5e76\u53cd) R\u4e32\uff1dR1+R2+R3+ 1/R\u5e76\uff1d1/R1+1/R2+1/R3+
\u7535\u6d41\u5173\u7cfb I\u603b\uff1dI1\uff1dI2\uff1dI3 I\u5e76\uff1dI1+I2+I3+
\u7535\u538b\u5173\u7cfb U\u603b\uff1dU1+U2+U3+ U\u603b\uff1dU1\uff1dU2\uff1dU3
\u529f\u7387\u5206\u914d P\u603b\uff1dP1+P2+P3+ P\u603b\uff1dP1+P2+P3+
\u6b27\u59c6\u8868\u6d4b\u7535\u963b
(1)\u7535\u8def\u7ec4\u6210 (2)\u6d4b\u91cf\u539f\u7406
\u4e24\u8868\u7b14\u77ed\u63a5\u540e,\u8c03\u8282Ro\u4f7f\u7535\u8868\u6307\u9488\u6ee1\u504f\uff0c\u5f97
Ig\uff1dE/(r+Rg+Ro)
\u63a5\u5165\u88ab\u6d4b\u7535\u963bRx\u540e\u901a\u8fc7\u7535\u8868\u7684\u7535\u6d41\u4e3a
Ix\uff1dE/(r+Rg+Ro+Rx)\uff1dE/(R\u4e2d+Rx)
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(3)\u4f7f\u7528\u65b9\u6cd5:\u673a\u68b0\u8c03\u96f6\u3001\u9009\u62e9\u91cf\u7a0b\u3001\u6b27\u59c6\u8c03\u96f6\u3001\u6d4b\u91cf\u8bfb\u6570\uff5b\u6ce8\u610f\u6321\u4f4d(\u500d\u7387)\uff5d\u3001\u62e8off\u6321\u3002
(4)\u6ce8\u610f:\u6d4b\u91cf\u7535\u963b\u65f6\uff0c\u8981\u4e0e\u539f\u7535\u8def\u65ad\u5f00,\u9009\u62e9\u91cf\u7a0b\u4f7f\u6307\u9488\u5728\u4e2d\u592e\u9644\u8fd1,\u6bcf\u6b21\u6362\u6321\u8981\u91cd\u65b0\u77ed\u63a5\u6b27\u59c6\u8c03\u96f6\u3002
11.\u4f0f\u5b89\u6cd5\u6d4b\u7535\u963b
\u7535\u6d41\u8868\u5185\u63a5\u6cd5\uff1a
\u7535\u538b\u8868\u793a\u6570\uff1aU\uff1dUR+UA
\u7535\u6d41\u8868\u5916\u63a5\u6cd5\uff1a
\u7535\u6d41\u8868\u793a\u6570\uff1aI\uff1dIR+IV
Rx\u7684\u6d4b\u91cf\u503c\uff1dU/I\uff1d(UA+UR)/IR\uff1dRA+Rx>R\u771f
Rx\u7684\u6d4b\u91cf\u503c\uff1dU/I\uff1dUR/(IR+IV)\uff1dRVRx/(RV+R)<R\u771f
\u9009\u7528\u7535\u8def\u6761\u4ef6Rx>>RA [\u6216Rx>(RARV)1/2]
\u9009\u7528\u7535\u8def\u6761\u4ef6Rx<<RV [\u6216Rx<(RARV)1/2]
12.\u6ed1\u52a8\u53d8\u963b\u5668\u5728\u7535\u8def\u4e2d\u7684\u9650\u6d41\u63a5\u6cd5\u4e0e\u5206\u538b\u63a5\u6cd5
\u9650\u6d41\u63a5\u6cd5
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2.\u5b89\u57f9\u529bF\uff1dBIL\uff1b(\u6ce8\uff1aL\u22a5B) {B:\u78c1\u611f\u5e94\u5f3a\u5ea6(T),F:\u5b89\u57f9\u529b(F),I:\u7535\u6d41\u5f3a\u5ea6(A),L:\u5bfc\u7ebf\u957f\u5ea6(m)}
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2.\u78c1\u901a\u91cf\u03a6\uff1dBS {\u03a6:\u78c1\u901a\u91cf(Wb),B:\u5300\u5f3a\u78c1\u573a\u7684\u78c1\u611f\u5e94\u5f3a\u5ea6(T),S:\u6b63\u5bf9\u9762\u79ef(m2)}
3.\u611f\u5e94\u7535\u52a8\u52bf\u7684\u6b63\u8d1f\u6781\u53ef\u5229\u7528\u611f\u5e94\u7535\u6d41\u65b9\u5411\u5224\u5b9a\uff5b\u7535\u6e90\u5185\u90e8\u7684\u7535\u6d41\u65b9\u5411\uff1a\u7531\u8d1f\u6781\u6d41\u5411\u6b63\u6781\uff5d
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绛旓細4. 鐢垫祦鐨鎺ㄥ锛氱患鍚堜互涓婂洜绱狅紝鐢垫祦鍙互琛ㄧず涓哄崟浣嶆椂闂村唴閫氳繃鏌愪竴鎴潰鐨勭數鑽烽噺銆傝繖鍙互閫氳繃鐢佃嵎瀵嗗害鈥渘鈥濄佺數鑽疯浇浣撶殑閫熷害鈥渧鈥濄佺數鍦哄己搴︹淓鈥濆拰瀵间綋鐨勬í鎴潰绉淪鈥濇潵鎺ㄥ銆鐢垫祦鍏紡I=nesv姝ｆ槸杩欑鐗╃悊鍏崇郴鐨勬暟瀛﹁〃杈俱傝繖涓鍏紡鎻忚堪浜嗗浣撲腑鐢垫祦浜х敓鐨勫井瑙傛満鍒跺拰瀹忚琛ㄧ幇銆傝繖涓帹瀵艰繃绋嬭瀺鍚堜簡鐢靛銆佸姏瀛...
绛旓細鐢垫祦=鐢甸噺/鏃堕棿锛堢锛夌數鍔=鐢垫祦*鐢靛帇*鏃堕棿锛堢锛夌數鍔熺巼=鐢靛姛/鏃堕棿锛堢锛=鐢垫祦*鐢靛帇 涓茶仈鐢佃矾锛鎬荤數鍘=瀵间綋A涓ょ鐢靛帇+瀵间綋B涓ょ鐢靛帇+鈥︹︽荤數娴=閫氳繃瀵间綋A鐢垫祦=閫氳繃瀵间綋B鐢垫祦=鈥︹︽荤數闃=瀵间綋A鐢甸樆+瀵间綋B鐢甸樆+鈥︹﹀苟鑱旂數璺細鎬荤數鍘=瀵间綋A涓ょ鐢靛帇=瀵间綋B涓ょ鐢靛帇=鈥︹︽荤數娴=閫氳繃瀵间綋A鐢垫祦+閫氳繃瀵...
绛旓細鍥犳锛屽湪鐮旂┒鐨勫崟浣嶆椂闂村唴瀹癸紝閫氳繃妯埅闈㈢Н鐨勭數鑽烽噺涓篒=Q/t=nqvS/1锛屽嵆I=nqSv銆2銆佸惈涔夛細鍗曚綅鏃堕棿鍐呴氳繃瀵间綋妯埅闈㈢殑鐢佃嵎閲忥紝鍙數娴侊紝閫氬父鐢↖浠ｈ〃鐢垫祦锛岃〃杈惧紡I=Q/t(鍏朵腑Q涓虹數鑽烽噺锛屽崟浣嶄负搴撲鸡锛泃涓烘椂闂达紝鍗曚綅涓虹锛夛紝鐢垫祦鐨勫崟浣嶆槸瀹夊煿锛堣繖涓崟浣嶆槸涓轰簡绾康娉曞浗鐗╃悊瀛﹀瀹夊煿鍦ㄧ數瀛︾爺绌朵腑鐨勫法澶ц础鐚...
绛旓細鐢垫祦鍏紡锛欼锛漲/t锛(鍗冲崟浣嶆椂闂撮氳繃鐨勭數鑽凤紝鐩稿綋浜庡姏瀛﹂儴浠界殑璐ㄩ噺娴侊紝鍗曚綅鏃堕棿浼犻佺殑璐ㄩ噺)鐢靛鍏紡锛欳锛漲/U 锛(鍗冲崟浣嶇數鍘嬬殑鏋佹澘鐢佃嵎锛夌數瀹瑰偍鑳藉叕寮忥細Ec锛漲U/2锛(鐩稿綋浜庡姏瀛︿腑鐨勬按鏌卞娍鑳藉叕寮 E姘存煴锛漨gh/2)姝ゅ锛岀數鍦哄姏鐨勫彔鍔犵鍚堥潤鍔涘涓殑鍔涚殑鍙犲姞瑙勫垯锛屾柟鍚戜笉鍚屾椂瑕佺敤鍒扮浉搴旂殑涓夎鍑芥暟鍏紡銆傛湁...
绛旓細楂樹腑鐗╃悊鐢靛鍏紡濡備笅锛1銆佹濮嗗畾寰 娆у瀹氬緥鏄弿杩鐢垫祦銆佺數鍘嬪拰鐢甸樆涔嬮棿鍏崇郴鐨勫熀鏈硶鍒欍傚畠鍙互鐢ㄤ互涓嬪叕寮忚〃绀猴細V=I涔樹互R鍏朵腑锛孷琛ㄧず鐢靛帇锛堝崟浣嶏細浼忕壒锛夛紝I琛ㄧず鐢垫祦锛堝崟浣嶏細瀹夊煿锛夛紝R琛ㄧず鐢甸樆锛堝崟浣嶏細娆у锛夈2銆佸姛鐜 鍔熺巼鏄弿杩扮數鑳借浆鎹㈤熺巼鐨勭墿鐞嗛噺锛岃 閲忎簡鍗曚綅鏃堕棿鍐呭畬鎴愮殑宸ヤ綔閲忋傚湪鐢靛涓紝鍔熺巼鍙互...
绛旓細鐢垫祦锛欼₁ =I₂ =I₃ = 鈥︹︾數鍘嬶細U =U₁ U₂ U₃ 鈥︹﹀苟鑱旂數璺 鐢靛帇锛歎₁=U₂=U₃= 鈥︹︾數娴侊細I =I₁ I₂ I₃ 鈥︹︾數闃讳覆鑱旓細R =R₁ R₂ R₃ 鈥︹︾數闃诲苟鑱旓細1/R =1/R...
绛旓細鐗╃悊鐢靛鍏紡濡備笅锛1銆鐢垫祦寮哄害锛欼=Q鐢甸噺/t銆2銆佺數闃伙細R= pL/S銆3銆佹濮嗗畾寰嬶細I=U/R銆4銆佺劍鑰冲畾寰嬶細(1锛塓=宸2Rt锛堟櫘閫傚叕寮忥級銆(2锛塓=UIt=Pt=UQ鐢甸噺=U2t/R锛堢函鐢甸樆鍏紡锛夈5銆佷覆鑱旂數璺細锛1锛塈=I1=I2銆傦紙2锛塙=U1+U2銆傦紙3锛塕=R1+R2銆傦紙4锛塛=UIt=Pt=UQ锛堟櫘閫傚叕寮忥級銆傦紙5...
绛旓細楂樹腑鐗╃悊鎭掑畾鐢垫祦鍏紡 1.鐢垫祦寮哄害:I=q/t{I:鐢垫祦寮哄害(A),q:鍦ㄦ椂闂磘鍐呴氳繃瀵间綋妯浇闈㈢殑鐢甸噺(C),t:鏃堕棿(s)} 2.娆у瀹氬緥:I=U/R {I:瀵间綋鐢垫祦寮哄害(A),U:瀵间綋涓ょ鐢靛帇(V),R:瀵间綋闃诲(惟)} 3.鐢甸樆銆佺數闃诲畾寰:R=蟻L/S{蟻:鐢甸樆鐜(惟?m),L:瀵间綋鐨勯暱搴(m),S:瀵间綋妯埅闈㈢Н(m2)} 4.闂悎鐢佃矾...
