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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
Since , `vecm = NI vecA implies m = NI pi r^(2)`
`m prop r^(2)`
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