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Question
The table below gives the electric flux through the ends and round surfaces of four Gaussian surfaces in the form of cylinders. Rank the cylinders according to the charge inside, from the most negative to the most positive.
left end right end rounded surface
cylinder 1: +2 x10-9N.m2/C +4 x10-9N.m2/C -6 x10-9N.m2/C
cylinder 2: +3 x10-9N.m2/C -2 x10-9N.m2/C +6 x10-9N.m2/C
cylinder 3: -2 x10-9N.m2/C -5 x10"9N.m2/C +3 x10-9N.m2/C
cylinder 4: +2 x10-9N.m2/C -5 x10"9N.m2/C -3 x10-9N.m2/C
A) 1, 2, 3, 4
B) 4, 3, 2, 1
C) 3, 4, 2, 1
D) 3, 1, 4, 2
E) 4, 3, 1, 2
Answer
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