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Physics - EMI/AC Question with Solution | TestHub

PhysicsEMI/ACMotional & Rotational EMFMedium2 minPYQ_2010

PhysicsMediumsingle choice

A thin ring of radius $R$ metre has charge $q$ coulomb uniformly spread on it. The ring rotates about its axis with a constant frequency of $f$ revolution/s. The value of magnetic induction in $Wb m^{- 2}$ at the centre of the ring isNEET 2010 (Screening)

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Answer:

Solution:

The magnetic field at the centre of the circle $B = \frac{μ _{0} I}{2 R} = \frac{μ _{0}}{2 R} (\frac{q}{t}) = \frac{μ _{0} q f}{2 R}$

Stream:NEETSubject:PhysicsTopic:EMI/ACSubtopic:Motional & Rotational EMF

⏱ 2mℹ️ Source: PYQ_2010

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