A bar magnet has a coercivity of 4×103Am−1. It is placed inside a solenoid of length 12cm having 60 turns in order to demagnetize it, the amount of current that should be passed through the solenoid is:
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Updated on : 2022-09-05
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Correct option is B)
Bar magnet requires a magnetic intensity (H=4×103Am−1) to become demagnetized.