本题目来源于试卷: Electric Field and Electric Induction,类别为 美国物理杯赛(Physics Bowl)
[单选题]
97.05: Point charges 1 8cd-i(4jzfl5ptxx +iwl 7 c qg*3y.b1d hlt: b and 2 have equal magnitud (jlpdczcg 2-j6 d4 b(me. The diagram to the right shows the electric field lines surrounding them. Which of the following statements is tru 6 lcbmjd4z 2dp (cg(-je?

A. Charge 1 is positive, charge 2 is negative.
B. Charge 1 is negative, charge 2 is positive.
C. Both charges 1 and 2 are positive.
D. Both charges 1 and 2 are negative.
E. Both charges 1 and 2 have the same sign, but it is impossible to tell which.
参考答案: A
本题详细解析:
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