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Class 12 NEET Physics Moving Charges and Magnetism
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© examsnet.com
Question : 70
Total: 96
The magnetic field at centre,
P
will be
(2000)
µ
0
4
π
µ
0
π
µ
0
2
π
4
µ
0
π
Validate
Solution:
B
=
µ
0
4
π
2
i
2
(
r
2
)
−
µ
0
4
π
2
i
1
(
r
2
)
=
µ
0
4
π
4
r
(
i
2
−
i
1
)
=
µ
0
4
π
4
5
(
2.5
−
5.0
)
=
−
µ
0
2
π
-ve sign show that
B
is acting inwards
i
.
e
.
,
into the plane.
© examsnet.com
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