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 point charge of -q are ipzk4t5h8+u t b8obc gb5 b1k-6)k(h;dkmjla separated bk(dl o-6k 1)bbabgm8b j;kh c5y a distance 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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