本题目来源于试卷: Electrostatic Force and Electric Field，类别为 美国物理杯赛(Physics Bowl)
[单选题]
01.31: A positive point charge of +q and a negative)a( cgag 4ut1sy5ojsv xk sq:/r-g*/(e o.uby zkr7k zligm1 q7/.42jqrk)qcpoint charge of -q are separated by a distzr .k4ir7cgk27 ml jq )qk1z/qance d. What would be the magnitude of the electric field midway between the two charges?
A. $E = 0$
B. $E=\frac{kq}{d^{2}}$
C. $E=\frac{2kq}{d^{2}}$
D. $E=\frac{4kq}{d}$
E. $E=\frac{8kq}{d^{2}}$
参考答案: E
本题详细解析:
暂无
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