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Moving Charges and Magnetism
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Circular Current Loop as a Magnetic Dipoles
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A particle with charge q is moving along
Question
A particle with charge
q
is moving along a circle of radius
R
with uniform speed
V
. The associated
magnetic moment is given by:
A
2
1
V
2
R
B
4
1
q
V
R
C
2
1
q
V
R
D
2
1
q
2
V
R
Medium
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Updated on : 2022-09-05
Solution
Verified by Toppr
Correct option is C)
Current flowing through the loop
I
=
q
2
π
R
V
Area of the circular loop
A
=
π
R
2
Magnetic moment
μ
=
I
A
∴
μ
=
2
π
R
q
V
×
π
R
2
=
2
1
q
V
R
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