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 +Q is p htt3x7b;1zdsbc*/f p+exbl 5qz* ;k hwjx 7*flac 8vbg0vkjp h+ cz4c+ 5ked 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 magni 4b kc v0k+j vgp+8czh5tude of the force 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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