magnetic force (id: f9324da8e)

本题目来源于试卷: magnetic force，类别为 美国物理杯赛(Physics Bowl)

[单选题]
03.30: Two parallel wires are carrying differvbdizq+r:yd94(.p e3yv f-ddent electric currents 2 0xbwv) i)thxypk g*;in the same direction as shown in the diagram. How does the magnitude of the force on A from B compare to the force o *)byxxv)p; t0kih w2gn B from A?

A. $F_{B\:on\:A}$ =4 $F_{A\:on\:B}$
B. $F_{B\:on\:A}$ = $\frac{1}{4}$ $F_{A\:on\:B}$
C. $F_{B\:on\:A}$ = 2 $F_{A\:on\:B}$
D. $F_{B\:on\:A}$ = $\frac{1}{2}$ $F_{A\:on\:B}$
E. $F_{B\:on\:A}$ = $F_{A\:on\:B}$


参考答案:  E


本题详细解析: 暂无

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