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A compass needle free to turn in a horiz...

A compass needle free to turn in a horizontal plane is placed at the centre of a circular coil of 30turns and radius 12cm. The coil is in a vertical plane malting an angle of `45^(@)` with the magnetic meridian when the current in the coil is 0.35A, the needle points west to east. Determine the horizontal component of earth's magnetic field at the location.

A

`3.9xx10^(-5)`

B

`3.9xx10^(-6)`

C

`5xx10^(-5)`

D

`2.6xx10^(-5)`

Text Solution

Verified by Experts

The correct Answer is:
A
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