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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismProperties of magnetEasy2 minPYQ_2020

PhysicsEasysingle choice

A bar magnet is suspended freely in a uniform magnetic field of induction $B$ . When will the rate of change of torque $τ$ with deflection $θ$ be maximum? [Here $θ$ is the angle between the magnetic field and the magnetic moment of the bar magnet]

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Answer:

Solution:

$τ = MBsinθ$

$\frac{dτ}{dθ} = MBcosθ$

For $\frac{dτ}{dθ}$ to be maximum,

$cosθ = 1 \Rightarrow θ = 0 °$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Properties of magnet

⏱ 2mℹ️ Source: PYQ_2020

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