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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismBiot-savart's & Ampere's Circuital lawMedium2 minPYQ_2011

PhysicsMediumsingle choice

Charge $q$ is uniformly spread on a thin ring of radius $R$ . The ring rotates about its axis with a uniform frequency $f Hz$ . The magnitude of magnetic induction at the centre of the ring isNEET 2011 (Mains)

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Solution:

We know $B = \frac{μ _{0} i}{2 R} q = i t \Rightarrow i = \frac{q}{t} = q f [∵ f = \frac{1}{t}] B = \frac{μ _{0} q f}{2 R}$

Stream:NEETSubject:PhysicsTopic:MagnetismSubtopic:Biot-savart's & Ampere's Circuital law

⏱ 2mℹ️ Source: PYQ_2011

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