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Coercivity of a magnet where the ferroma...

Coercivity of a magnet where the ferromagnet gets completely demagnetized is `3 xx 10^(3)` A `m^(-1)`, The minimum current required to be passed in a solenoid having 1000 turns per metre, so that the magnet gets completely demagnetized when placed inside the solenoid is

A

3A

B

30mA

C

6A

D

60mA

Text Solution

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The correct Answer is:
A
`3A `
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