本题目来源于试卷: Physics Unit16: Electric Charge and Electric Field，类别为 通用国际物理
[单选题]
A metal sphere of radius 10 cm car ;hoqqke3 0kb0 y;qh.fries a charge of +2.0 mC. What is the mrf6zylq* h w/3os3 8 * n9amgns)otco*agnitude of the electric field 5.0 cm from33 t*f)cn*a/ls86sgh yzqrwoo9o* nm the sphere's surface?
A. $4.0 \times 10^{5} \; N/C$
B. $8.0 \times 10^{5} \; N/C$
C. $4.0 \times 10^{7} \; N/C$
D. $8.0 \times 10^{7} \; N/C$
参考答案: B
本题详细解析:
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