A hollow cylinder has a charge $q$ coulomb within it. If $\phi $ is the electric flux in units of voltmete associated with the curved surface $B$ , the flux linked with the plane surface $A$ in units of volt-meter will be
A hollow cylinder has a charge $q$ coulomb within it. If $\phi $ is the electric flux in units of voltmete associated with the curved surface $B$ , the flux linked with the plane surface $A$ in units of volt-meter will be
- A
$\frac{1}{2}\,\left( {\frac{q}{{{ \in _0}}}\, - \,\phi } \right)$
- B
$\frac {q}{2\, \in_0}$
- C
$\frac {\phi }{3}$
- D
$\frac {q}{\in _0} - \phi $
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