a bar magnet is demagnetised by inserting it inside a solenoid of length 0.2m, 100 turns and carrying a current of 5.2A. the coercivity of the bar magnet is
Answer (1)
11th Feb, 2020
Intensity of magnetising field - in which
SI unit is A/m
In CGS - Oersted
H = B/u
You can get the answer using the following formulas..
Therefore the answer after substitution comes out to be 2600 A/m.
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