有5个10欧的电阻并联，等效电阻是多少？ 5个10欧姆的电阻并联可以得到多大的电阻?
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1/r1+1/r2,\u628a\u8fd9\u4e2a\u5f0f\u5b50\u8fdb\u884c\u901a\u5206\u53ef\u4ee5\u5f97\u5230\uff08r1+r2\uff09/(r1*r2),\u56e0\u4e3a\u603b\u7535\u963b\u662f\u4ed6\u4eec\u7684\u5012\u6570\uff0c\u56e0\u6b64\u603b\u7535\u963br\u7b49\u4e8er1*r2/(r1+r2)
\u6211\u4eec\u77e5\u9053\u5e76\u8054\u7535\u963b\u4e24\u7aef\u7684\u7535\u538b\u76f8\u7b49\u4e14\u7b49\u4e8e\u603b\u7535\u538b\uff0c
\u603b\u7535\u6d41\u7b49\u4e8e\u6d41\u7ecf\u5404\u4e2a\u7535\u963b\u7684\u7535\u6d41\u4e4b\u548c\uff0c
\u7531\u4e8e\u8fd95\u4e2a\u7535\u963b\u7684\u963b\u503c\u76f8\u7b49\uff0c\u6240\u4ee5\u6d41\u7ecf\u5404\u4e2a\u7535\u963b\u7684\u7535\u6d41\u5fc5\u7136\u76f8\u7b49\uff0c
\u4e5f\u5c31\u662f\u8bf4\u603b\u7535\u6d41\u662f\u6d41\u7ecf\u5404\u4e2a\u7535\u963b\u7684\u7535\u6d41\u76845\u500d\uff0c
\u6839\u636e\u6b27\u59c6\u5b9a\u5f8bU=IR\u53ef\u77e5\uff0c\u7531\u4e8e\u7535\u538b\u76f8\u7b49\uff0c\u603b\u7535\u6d41\u53c8\u662f\u5206\u7535\u6d41\u76845\u500d\uff0c\u90a3\u603b\u7535\u963b\u5c31\u662f10\u6b27\u59c6\u7684\u4e94\u5206\u4e4b\u4e00\uff0c\u4e5f\u5c31\u662f2\u6b27\u59c6\uff01
\u5982\u679c\u77e5\u9053\u5e76\u8054\u7535\u8def\u7b49\u6548\u7535\u963b\u7684\u6c42\u6cd5\uff0c\u5c31\u53ef\u6839\u636e\u697c\u4e0a\u6240\u8bf4\u7684\u8fdb\u884c\u6c42\u89e3\uff01
电阻并联的总电阻，等于参与并联的几个电阻的阻值的倒数的和的倒数，即：
1/R=1/R1+1/R2+1/R3+1/R4+1/R5
R=2欧
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