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A rectangular coil 20cmxx20cm has 100 tu...

A rectangular coil `20cmxx20cm` has `100` turns and carries a current of `1 A`. It is placed in a uniform magnetic field `B=0.5 T` with the direction of magnetic field parallel to the plane of the coil. The magnitude of the torque required to hold this coil in this position is

A

Zero

B

`200 N-m`

C

`2 N-m`

D

`10 N-m`

Text Solution

Verified by Experts

The correct Answer is:
C
`tau=NBiA=100xx0.5xx1xx400xx10^(-4)=2 N-m`
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