The B - H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with 1000 turns cm - 1 . The current that should be passed in the solenoid to demagnetize the

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The B - H curve for a ferromagnet is shown in the figure. The ferromagnet is placed inside a long solenoid with 1000 turns cm - 1 . The current that should be passed in the solenoid to demagnetize the ferromagnet completely is,

TestHub · Accepted Answer

The coercivity of ferromagnet, H = 100 A m - 1 , n × I = 100 ⇒ I = 100 10 5 = 1 m A .

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