Question

A physics instructor in an anteroom charges an electrostatic generator to 25 , then carries it into the lecture hall. The net electric flux through the lecture hall walls is:
A) 0 N.m2/C
B) 25 x10-6N.m2/C
C) 2.2 x105N.m2/C
D) 2.8 x106N.m2/C
E) can't tell unless the lecture hall dimensions are given

Answer

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