本题目来源于试卷: Physics Unit20: Magnetism，类别为 通用国际物理
[单选题]
A particle carrying a jni*q w9 8f7emcharge of +e traveljimg:. je:lka n :ybw/vl0si2c;r9r 1mqv4. ls in a circular path in a uniform magnetic field. If instead the particle carried a charge of +2e, the radius of thee; w4 mqcs :ika2v.njrm lb:rly i09j/1.gv:l circular path would have been
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: C
本题详细解析:
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