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Question
Physics
A solenoid having a length 25cm and total nnumber of turns equal to 500 , carries a current of 15A . If we consider it to be a magnet then find its magnetization.
Q. A solenoid having a length
25
c
m
and total nnumber of turns equal to
500
, carries a current of
15
A
. If we consider it to be a magnet then find its magnetization.
58
166
NTA Abhyas
NTA Abhyas 2020
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A
3
π
A
m
−
1
B
30000
A
m
−
1
C
30000
π
A
m
−
1
D
300
A
m
−
1
Solution:
V
o
l
u
m
e
=
A
l
M
a
g
n
e
t
i
z
a
t
i
o
n
M
→
=
V
o
l
u
m
e
ma
g
n
e
t
i
c
m
o
n
e
n
t
=
V
o
l
u
m
e
(
N
o
.
o
f
t
u
r
n
s
)
×
(
C
u
rre
n
t
)
×
A
re
a
=
A
l
N
I
A
=
l
N
I
=
25
500
×
15
×
100
=
60
×
500
=
30
×
1
0
3
=
30000
A
m
−
1