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PhysicsMagnetismMagnetic torque & energyMedium2 minPYQ_2020

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A magnetic dipole is acted upon by two magnetic fields which are inclined to each other at an angle of $75^{o}$ . One of the fields has a magnitude of $15 mT$ . The dipole attains stable equilibrium at an angle of $30^{o}$ with this field. The magnitude of the other field (in $mT$ ) is close to

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Answer:

Solution:

$θ_{1} + θ = 75^{o}$

$M B_{1} \sin θ_{1} = M B_{2} \sin θ$

$\Rightarrow \frac{B_{1}}{\sqrt{2}} = \frac{15}{2}$

$\Rightarrow B_{1} = \frac{15}{\sqrt{2}} \approx 11 m T$

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Magnetic torque & energy

⏱ 2mℹ️ Source: PYQ_2020

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