問題詳情

2.A metal sphere of radius R, carrying charge Q, is surrounded : by a thick concentric metal shell (inner radius a, outer radius b， as shown in Fig. 2). The shell carries no net charge.


【題組】(a)Find the surface charge density cr at Ry at a, and at b. (6%)

參考答案

答案：C
難度：適中0.669291
統計：A(36),B(54),C(255),D(13),E(0)

用户評論

【瑜】評論

要怎麼排顏色?

【陳水漾】評論

明度越高面積就要越小

【bunny】評論

不合理的答案