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The magnetic moment of a current (i) car...

The magnetic moment of a current (i) carrying circular coil of radius (r) and number of turns (n) varies as

A

`1//r^2`

B

`1//r `

C

`r `

D

`r^(2) `

Text Solution

Verified by Experts

The correct Answer is:
D
From the formula , the magnetic moment of a current carrying circular coil is given by
`M=niA-nipir^2`
where , r is the radius of circular coil.
Therefore , magnetic moment is proportional to ` r^(2)`.
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MHTCET PREVIOUS YEAR PAPERS AND PRACTICE PAPERS-MAGNETISM-II-Exercise 1
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