本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
Consider two current-carrying circular loopsz;;ogbi:ij s ;. Both are made from one stral9.hokbpv 0dyw4 lx95 nd of wire and both carry the same current, but one has twice the radius of the other. Compared to the magnetic field at the.xw lv9yd09 oh4blk5p center of the smaller loop, the magnetic field at the center of the larger loop is
A. 8 times stronger.
B. 4 times stronger.
C. 2 times stronger.
D. none of the given answers
参考答案: D
本题详细解析:
暂无
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