For a closed surface E ,ds , , = , ,0, then - Vidyadip

MCQ

For a closed surface $\oint {\overrightarrow {E \cdot } } \,\overrightarrow {ds} \,\, = \,\,0$, then

A
Electric field at every point on surface is zero
B
Electric field at every point on surface is uniform
C
Electric Field at every point on surface is parallel
✓
The number of electric field lines entering the surface will be equal to number of electric field line exit the surface

✓

Answer

Correct option: D.

The number of electric field lines entering the surface will be equal to number of electric field line exit the surface

d
Net flux $=0 \quad \therefore \quad \phi_{\text {in }}+\phi_{\text {out }}=0$

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