本题目来源于试卷: Physics Unit20: Magnetism，类别为 国际高中通用物理
[单选题]
A charged particle is8t66w)g mngte o (9ftv*g lyhppba )58vbserved traveling in a circular path in a uniform magnetic field. If the particle had been traveling twice as fast, the radius of the circular path wgp)bh(95* 8 taylvfpvould be
A. twice the original radius.
B. four times the original radius.
C. one-half the original radius.
D. one-fourth the original radius.
参考答案: A
本题详细解析:
暂无
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