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A circular coil of 20 turns and radius 1...

A circular coil of 20 turns and radius 10 cin is placed in a uniform magnetic field of 0.10 T normal to the plane of the coil. If the current in the coil is 5.0 A, the total torque on the coil will be

A

0

B

0.314J

C

3.14J

D

6.28J

Text Solution

Verified by Experts

The correct Answer is:
A
Total torque on the coil `tau=BIAsintheta` where `theta` is the angle is the normal to the plane of the coil makes with the direction of magnetic field.
Here,`theta=0^(@)" ":." "tau=0`
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