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 placedqa iml:b3xk, 5t.a7 4 dixa7mb nw5;4/ i cbyo0bxn+ 7fsc/ jmkat the origin and charge -q is placed at x = 2a. Where can a third positive cc xok ni5jcfn+m 7;4y b/sw0/bharge +q be placed so that the force on it 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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