Physics Unit16: Electric Charge and Electric Field (id: 146c09db1)

本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 通用国际物理

[单选题]
Charge +2q is placed at the origin ankqeh)fa/q 54 od charge -q is placed mw9z6cbe *2onqij0:: e(pu ykat x = 2a. Where can a third positive charge +q be placed so that the force on bpom0*6u: 2:q jz (wceke9iy nit is zero?

A. $3.4 \; a$
B. $6.8 \; a$
C. $8.6 \; a$
D. $9.3 \; a$


参考答案:  B


本题详细解析: 暂无

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