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A solenoid has 1000 turns per meter leng...

A solenoid has 1000 turns per meter length. If a current of 5 A is flowing through it, then magnetic field inside the solenoid is :

A

`2pi xx 10^(-3) T`

B

`4pi xx 10^(-5)T`

C

`2pi xx 10^(-5)T`

D

`4pi xx 10^(-3) T`

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