• 2022-06-03
    10.7. 一无限长直圆柱体, 半径为R, 沿轴向均匀流有电流,如图所示.设圆柱体内(r<R )的磁感应强度大小为B1, 圆柱体外( r>R )感应强度大小为B2, 则有http://p.ananas.chaoxing.com/star3/origin/d9a07f7a9c5dee7c6ac894178b6e3946.png