A plastic disc of radius $R$ has a charge $q$ uniformly distributed over its surface. If the disc is rotated at an angular frequency $\omega$ about it axis, the induction at the center of the disc is :-
A plastic disc of radius $R$ has a charge $q$ uniformly distributed over its surface. If the disc is rotated at an angular frequency $\omega$ about it axis, the induction at the center of the disc is :-
- A
$\frac{{{\mu _0}q}}{{2\pi R}}$
- B
$\frac{{{\mu _0}\omega q}}{{2\pi R}}$
- C
$\frac{{{\mu _0}(2\pi q)}}{{\omega R}}$
- D
$\frac{{{\mu _0}\omega q}}{{2\pi }}$
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- [AIIMS 2015]