問題詳情
41. A metal bar sliding on parallel rails a length
apart from one another is given initial velocity vo tothe right. The rails are connected by a resistor of resistance R at their left. If a constant magnetic fieldB is directed into the page, what is the magnitude of the force on the rod?
(A)
(B)
(C)
(D)
(E)
參考答案
答案：D
難度：計算中-1
書單：沒有書單，新增