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1. Electric Charges and Fields
medium
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
D
The number of electric field lines entering the surface will be equal to number of electric field line exit the surface
Solution
Net flux $=0 \quad \therefore \quad \phi_{\text {in }}+\phi_{\text {out }}=0$
Standard 12
Physics
