問題詳情

13. A long, straight wire carries a constant current I. A metal rod of length I moves at constantvelocity on rails of negliglble resistance that terminate in a resistor R, as shown in the figire.The induced current in the resistor is


(A)


(B)


(C)


(D)


(E) none of the above.

參考答案

答案：A
難度：計算中-1
書單：沒有書單，新增