Question 715: Electrostatics & Capacitance

Question

If $\oint_\limits{s} \vec{E} \cdot \overrightarrow{d S}=0$ over a surface, then:

Accepted Answer

$\phi_{\mathrm{closed}}=0$
So, $\mathrm{\phi_{in}=\phi_{out}}$
Number of field lines entering is equal number of field lines leaving.

Answer

the magnitude of electric field on the surface is constant.

Answer

all the charges must necessarily be inside the surface.

Answer

the electric field inside the surface is necessarily uniform.

Answer

the number of flux lines entering the surface must be equal to the number of flux lines leaving it.

Electrostatics & Capacitance