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The magnetic moment associated with a ci...

The magnetic moment associated with a circular coil of 35 turns and radius 25 cm, if it carries a current of

A

`72.2A m^(2)`

B

`70.5A m^(2)`

C

`74.56A m^(2)`

D

`75.56A m^(2)`

Text Solution

Verified by Experts

The correct Answer is:
D
Given N = 35, r = 25 cm `=25xx10^(-2)m,` I = 11 A
Then magnetic moment associated with this circular coil
`M = NIA = NIpi r^(2)=35xx11xx3.14xx(25xx10^(-2))^(2)`
`=75.56"A m"^(2)`
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