挑战习题
1/5单选题
难度:

1.关于电功,下列说法正确的是(  )
A 电流通过电灯做功时,电能只转化为光能
B 电流做功的多少可能大于电能转化为其他形式能量的多少
C 通过导体的电流越大,电流做的功一定越多
D 电流做了多少功,就相当于有多少形式的电能转化为其他形式的能
提示1:
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正确答案:RA==
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