试题与答案

在磁感应强度为0.4T的匀强磁场中,让长为0.5m、电阻为0.1Ω的导体棒ab在

题型:问答题

题目:

在磁感应强度为0.4T的匀强磁场中,让长为0.5m、电阻为0.1Ω的导体棒ab在金属框上以10m/s的速度向右匀速滑动,电阻R1=6Ω,R2=4Ω,其他导线上的电阻可忽略不计.求:

(1)ab棒中的电流大小与方向;

(2)为使ab棒匀速运动,外力的机械功率;

(3)ab棒中转化成电能的功率,并比较机械功率与转化功率是否相等.

答案:

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