問題詳情

4.Two semicircular loops of radii a and b have a common center and their ends are joined by straight wires, as shown in Fig. 4.


【題組】(a)What is the resultant magnetic field at the center? (20 %)

參考答案

答案：A
難度：非常簡單1
統計：A(489),B(0),C(0),D(0),E(0)