如图所示的电路中,已知电源电压为6V,当开关S闭合时,电流表的示数为0.5A.如果电阻R2的阻值为6欧

1个回答

  • (1)R1=UI1=6V0.5A=12Ω

    (2)I2=UR2=6V6Ω=1A

    W1=UI1t=6V×0.5A×10s=30J

    W2=UI2t=6V×1A×10s=60J

    答:(1)电阻R1的阻值为12Ω;

    (2)通电10秒电流对电阻R1、R2所做的总功分别为30J、60J