問題詳情

20. The following fgure shows a conductive sphere with a spherical cavity in thecenter. The total charge on the conductor is zero, but a point charge Q isplaced at the center of the cavity. How does the electric potential (V) as afunction of the distance from the center (r) looks like?


(A)


(B)


(C)


(D)


(E)

參考答案

答案：A
難度：計算中-1
書單：沒有書單，新增