Question

When a 10 μC charge is enclosed by a closed surface, the flux passing through the surface is 0. Now another -10 μC charge is placed inside the closed surface, then the flux passing through the surface is ______
(A) 2Φ
(B) Φ
(C) 4Φ
(D) zero

Answer 1

Dear Student,

◆ Answer -

(D) zero

◆ Explanation -

Gauss's law states that the electric field flux through a closed surface equals the enclosed charge divided by the permitivity of free space.

Thus, electric flux is -

Electric flux = charge / permittivity

Φ' = (10×10^-6 - 10×10^-6) / ε0

Φ' = 0 / ε0

Φ' = 0

Therefore, the flux passing through the surface is zero.

Hope this helps you...