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Hysteresis Loop
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The corecivity of a small magnet where t
Question
The corecivity of a small magnet where the ferromagnet gets demagnetized is
3
×
1
0
3
A
m
−
1
. The current required to be passed in a solenoid of length
1
0
c
m
and number of turns
1
0
0
, so that the magnet gets demagnetized when inside the solenoid is:
A
3
A
B
6
A
C
3
0
m
A
D
6
0
m
A
Medium
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Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is A)
μ
o
H
=
μ
o
n
i
n
=
L
N
=
0
.
1
1
0
0
3
×
1
0
3
=
0
.
1
1
0
0
i
i
=
3
A
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