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 国际高中通用物理

[单选题]
A point charge of +Q is placed at the centroid ok)r ms0:;-k/:bdpz(rmtrpa ;u6c9udxm b ce+--5-iw6zl47(, edpktmg,bnkfm j dj jf 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 act-4i (lwg-5t7fdnj jm,d bm-pjkz,6ke s on it. What is the magnitude 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

微信扫一扫，分享更方便