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PhysicsMagnetismProperties of magnetEasy2 minPYQ_2019

PhysicsEasysingle choice

A bar magnet is demagnetized by inserting it inside a solenoid of length $0.2 m, 100$ turns, and carrying a current of $5.2 A .$ The coercivity of the bar magnet is:

Options:

Answer:

Solution:

Coercivity $= n I = \frac{100}{0.2} \times 5.2 A / m$

$= 2600 A / m$

Stream:JEESubject:PhysicsTopic:MagnetismSubtopic:Properties of magnet

⏱ 2mℹ️ Source: PYQ_2019

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