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]
Three 3.0 mC charges are (1chx :p8v).rf alqgmv2gx. aku4a3 aat the three corners uyi t5yb wz5chw ,d491 bfvs2+i)yfd9of a square of side 0.50 m. The last corner is occupied by a -3.0 mC charge. Find the electric field at thbydwc 14s +9f,dv5fytiw2uh 9ibzy)5 e center of the square.
A. $2.2 \times 10^{5} \; N/C$
B. $4.3 \times 10^{5} \; N/C$
C. $6.1 \times 10^{5} \; N/C$
D. $9.3 \times 10^{5} \; N/C$
参考答案: B
本题详细解析:
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