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A closely wound solenoid of 3000 turns a...

A closely wound solenoid of 3000 turns and area of cross section `2xx 10^(-4)m^(2)`, carrying a current of 6 A is suspended through its centre allowing it to turn in a horizontal plane. The magnetic moment associated with this solenoid is

A

`1.2JT^(-1)`

B

`2.4JT^(-1)`

C

`3.0JT^(-1)`

D

`3.6JT^(-1)`

Text Solution

Verified by Experts

The correct Answer is:
D
Here, `n=3000A, A=2xx10^(-4)m^(2), I=6A`
`therefore M=NIA =3000xx6xx2xx10^(-4)=3.6JT^(-1)`
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