First slide

Gauss's Law

Question

If the net electric flux over a Gaussian surface is zero, then select the correct option

Moderate

A

Electric field at any point on the Gaussian surface must be zero
B

Electric field at any point on the Gaussian surface may not be zero
C

Electric field at any point on the Gaussuan surface must not be zero
D

No electric charge should reside inside the Gaussian surface

Solution

If net flux is zero by Gauss's law, $ϕ = \vec{E} . d \vec{A} = 0$ . In this case net charge enclosed by the Gaussian surface must be zero. But charge may reside out side

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