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The magnetic induction at the centre of ...

The magnetic induction at the centre of a solenoid is `B`. If the length of the solenoid is reduced to half and the same wire is would in two layers the new magnetic induction is

A

`B`

B

`2B`

C

`B//2`

D

`4B`

Text Solution

Verified by Experts

The correct Answer is:
2
`B=mu_(0)n i`
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