The corecivity of a small magnet where the ferromagnet gets demagnetized is 3×103Am−1. The current required to be passed in a solenoid of length 10cm and number of turns 100, so that the magnet gets demagnetized when inside the solenoid is:
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A demagnetize a small ferromagnet, a current of 2A is required to be passed in a solenoid of length 20cm and number of turns 100. The coercivity of the magnet is:
The coercivity of a magnet is 3×103Am−1. What current should be passed through a solenoid of length 10cm and number of turns 50 that the magnet is demagnetized when inserted in it?