A bar magnet of magnetic moment M is bent to form a semicircle. What is the magnetic moment of
the bent magnet ?
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The magnetic moment of the bent magnet=
Explanation:
Let l be the distance between two poles of bar magnet.
Magnetic moment of bar magnet=M
We know that
Magnetic moment=
Where
l=Distance between two poles
m=Magnetic strength of any one pole
Let r be the radius of semi-circle.
Distance between two poles=l
Where =Circumference of semi- circle
Distance between two poles when the bar magnet is convert into bent magnet=2r=
The new magnetic moment of bent magnet=
The new magnetic moment of bent magnet=
Hence, the magnetic moment of the bent magnet=
#Learns more:
A bar magnet of length l and magnetic dipolemoment M is bent in the form of an arc as shown in figure. The new magnetic dipole
moment will be :-
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