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A toroidal solenoid has 3000 turns and a...

A toroidal solenoid has `3000` turns and a mean radius of `10cm`. It has a soft iron core of relative magnetic permeability `2000`. Find the magnitude of the magnetic field in the core when a current of `1.0amp.` is passed through the solenoid.

A

20T

B

12T

C

6T

D

3T

Text Solution

Verified by Experts

The correct Answer is:
B
`B = (muNi)/(2pi r)`
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