本题目来源于试卷: Physics Unit17: Electric Potential，类别为 通用国际物理
[单选题]
Four charges of equal cc2bmq+qmt/c/ al).-c 6ryw0ta whr6 nkvvh-qetr 7:0 uz0+y/eacr)u harge +q are placed at the corners of a rectangle of sides a and b. What is the potential at the center of the rec+r: zvut/ a ckvy7qee -0r0)uhtangle if q = 2.0 mC, a = 3.0 cm, and b = 4.0 cm?
A. $1.3 \times 10^{6} \; V$
B. $2.9 \times 10^{6} \; V$
C. $3.5 \times 10^{6} \; V$
D. $7.8 \times 10^{6} \; V$
参考答案: B
本题详细解析:
暂无
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