The magnetic moment of a current 
carrying circular coil of radius 
and number of turns 
varies as
A
B
C
r
D
Text Solution
Verified by ExpertsThe correct answer is:
D
The magnetic moment is a measure of the strength of a magnetic source. The equation for magnetic moment in the current carrying loop, carrying current 
and of area vector 
for which the magnitude is given by
where 
is current 
, is area 
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