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A long solenoid has 100 turns/ meter and...

A long solenoid has 100 turns/ meter and a current of 3.5A is flowing through it. If the filled with material of relative permeability `(mu_(r)=20)` then magnetic field withing the solenoid will be?

A

`28pixx10^(-4)`

B

`14pixx10^(-4)`

C

`14pixx10^(-3)`

D

`2.8pixx10^(-6)`

Text Solution

Verified by Experts

The correct Answer is:
A
`B=mu_(0)muR"ni"`
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