四个等值电阻并联后的总电阻为5欧,若将它们串联后接到8V的电源上,电路中的电流为
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\u7535\u963b\uff1d1/\u3014\uff081/4\uff09+\uff081/6\uff09\u301512/5
\u6240\u4ee5\uff0c\u7535\u538b\uff1d5*\uff0812/5\uff09\uff1d12\u4f0f
\u4e32\u8054\u540e\uff0c\u7535\u963b\uff1d4+6\uff1d10\u6b27
\u7535\u6d41\uff1d\u7535\u538b/\u7535\u963b\uff1d12/10\uff1d1.2\u5b89
\u7535\u963b\u4e24\u7aef\u7535\u538b\u5206\u522b\u4e3a1.2*4\uff1d4.8\u4f0f 1.2*6\uff1d7.2\u4f0f
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四个等值电阻并联后的总电阻为5欧，则单个电阻阻值为5*4=20欧，串联后=20*4=80欧，接到8V的电源上，电路中的电流为8/80=0.1A绛旓細鐗╃悊瀛︾數瀛︿腑锛骞惰仈鐢佃矾涓鎬荤數闃R鐨勫掓暟绛変簬鍚勫垎鐢甸樆鐨勫掓暟涔嬪拰锛屾棦 1/R鎬=1/R鈶+2/R鈶★紝涓娆＄被鎺ㄣ 鑻ユ兂棰樹笂鐨勪究涓 1/R鎬=4R. 瀵逛笉璧锋垜涓嶆槸鐢佃剳楂樻墜锛屼笉浼氭墦鍒嗘暟鍜屽噯纭殑绗﹀彿锛岃璋呫傝浣犲皢鏁板间唬鍏ュ叕寮忓嵆鍙緱鍑虹粨鏋溿
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