問題詳情
3.A square loop of wire (side a) lies on a table, a distance s from a very long straight wire, which carries a current /，as shown in Fig. 3.
【題組】(a)Find the flux of B through the loop. (15 %)
參考答案
答案：A
難度：簡單0.810256
統計：A(158),B(18),C(3),D(6),E(0)