A conducting sphere of radius $R$ is given a charge $Q.$ The electric potential and the electric field at the centre of the sphere respectively are
A conducting sphere of radius $R$ is given a charge $Q.$ The electric potential and the electric field at the centre of the sphere respectively are
- [AIPMT 2014]
- A
$0 $, $\frac{Q}{{4\pi {\varepsilon _0}{R^2}}}$
- B
$\frac{Q}{{4\pi {\varepsilon _0}{R }}}$ ,$0$
- C
$\frac{Q}{{4\pi {\varepsilon _0}{R^{}}}}$ $,\frac{Q}{{4\pi {\varepsilon _0}{R^2}}}$
- D
$0,0$
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