A solenoid is 2 m long and 3 cm in diame...

A solenoid is 2 m long and 3 cm in diameter. It has 1000 turns and carries a current of 5A. Magnetic field at the centre is

A

`3.14 xx 10^-2 Wb//m^2`

B

`3.14 Wb//m^2`

C

`3.14 xx 10^-3 Wb//m^2`

D

`3.14 xx 10^-1 Wb//m^2`

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