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Physics - Magnetism Question with Solution | TestHub

PhysicsMagnetismProperties of magnetEasy2 minPYQ_2020

PhysicsEasysingle choice

A magnetic wire of dipole moment $4 π A m^{2}$ is bent in the form of semicircle. The new magnetic moment is

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Answer:

Solution:

Here, $M_{i} = 4 π$

$m L = 4 π$

$m = \frac{4 π}{L}$

The new distance between poles is

$L_{1} = 2 r = 2 \frac{L}{2 π} = \frac{L}{π}$

$∴ M_{f} = m L_{1} = \frac{m L}{π} = \frac{4 π}{π} = 4 A m^{2}$

Stream:NTA_ABHYAS_NEETSubject:PhysicsTopic:MagnetismSubtopic:Properties of magnet

⏱ 2mℹ️ Source: PYQ_2020

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