As shown in the figure, the radius of each of quarter circular arc is $2 m$ . Find the magnetic moment of the given loop for the current in the loop.

5 m

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4 m

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3 m

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2 m

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Solution

The correct option is B $4 m$
Magnetic dipole moment $M$ with the circular current loop carrying a current $I$ and of area $A .$
the magnetic of $m$ is $| m | - I A$
Further $,$ the direction of the magnetic dipole moment is perpendicular to the plane of the loop $P .$
you have four direction $M_{1} + M_{2} + M_{3} + M_{4}$
area are same so is $- M = 4 m$
Hence,
option $(B)$ is correct answer.

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As shown in the figure, the radius of each of quarter circular arc is 2m. Find the magnetic moment of the given loop for the current in the loop.

As shown in the figure, the radius of each of quarter circular arc is $2 m$ . Find the magnetic moment of the given loop for the current in the loop.