Physics Unit16: Electric Charge and Electric Field (id: 90dbca35c)

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]
A point charge of +Qgb*xo4 8:lv.ii bamq7-5* lzooh:gms jngnn)x 4vvzj 0do4c,-h v k(- is placed at the centroid of an equilateral triangle. When a second charge of +Q is placed at one of the triangle's vertices, an electrostatic force of 4.0 N acts on it. What is the magnitude of the fvkoh40v4nnvnjjg, ( z-)cd-x orce that acts on the center charge due to a third charge of +Q placed at one of the other vertices?

A. zero
B. $4.0 \; N$
C. $8.0 \; N$
D. $16 \; N$


参考答案:  B


本题详细解析: 暂无

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