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Electric charges +q(1), -q(1), +q(2) and...

Electric charges `+q_(1), -q_(1), +q_(2)` and `-q_(2)` are placed in free space and S is a spherical Gaussian surface. The electric flux passing over the surface S is:

A

due to `+q_(2)` only

B

due to all charges

C

zero

D

due to positive charges only

Text Solution

Verified by Experts

The correct Answer is:
C

According to Gauss.s theorem the total flux coming out of a closed surface (S) is the ratio of the total charge contained in it and the permittivity of the free space `(epsilon_(0))`.
Total flux `(phi) = (sum_(i)qi)/(epsilon_(0))`
`phi=((-q_(1)+q_(2)+q_(1)-q_(2)))/(epsilon_(0))`
`phi=0`
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