A long solenoid has 200 turns per cm. an...

A long solenoid has 200 turns per cm. and carries a current of 2.5 amps. The magnetic field at its centre is `(muo=4pixx10^-7wber//amp-m)`…

`3.14xx10^-2 weber//m^2`

`9.42xx10^-2 weber//m^2`

`6.28xx10^-2 weber//m^2`

`12.56xx10^-2 weber//m^2`

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