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  • Solve this problem 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:

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:

 

  • Option 1)

    285 A/m

  • Option 2)

    2600 A/m

  • Option 3)

    520 A/m

  • Option 4)

    1200 A/m

Answers (2)

best_answer

 

Intensity of magnetising field -

H=\frac{B}{\mu }

- wherein

S.I. unit is A/m

In C.G.S. - Oersted

 

 

 


Option 1)

285 A/m

Option 2)

2600 A/m

Option 3)

520 A/m

Option 4)

1200 A/m

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Option 2)2600A/m

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himanichoudhary7014

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