A thin ring of radius R meter has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of f revolutions/s. The value of magnetic induction in Wb/m² at the

Question

A thin ring of radius R meter has charge q coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of f revolutions/s. The value of magnetic induction in Wb/m² at the centre of the ring is

A

$\frac{\mu_0 qf}{2R}$

B

$\frac{\mu_0 qf}{2\pi R}$

C

$\frac{\mu_0 q}{2\pi fR}$

D

$\frac{\mu_0 q}{2fR}$

Accepted Answer

$\frac{\mu_0 qf}{2R}$

Answer

$\frac{\mu_0 qf}{2\pi R}$

Answer

$\frac{\mu_0 q}{2\pi fR}$

Answer

$\frac{\mu_0 q}{2fR}$

AIPMT PRELIMS 2010 Physics Magnetic Field Due to Current MCQ Question

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