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There are 50 turns of a wire in every cm...

There are `50` turns of a wire in every `cm` length of a long solenoid. If `4` ampere current is flowing in the solenoid, the approximate value of magnetic field along its axis at an internal point and at one end will be respectively

A

`12.6xx10^(-3)"Weber"//m^(2),6.3xx10^(-3)"Weber"//m^(20`

B

`12.6xx10^(-3)"Weber"//m^(2),25.1xx10^(-3)"Weber"//m^(2)`

C

`25.1xx10^(-3)"Weber"//m^(2),12.6xx10^(-3)"Weber"//m^(2)`

D

`25.1xx10^(-5)"Weber"//m^(2),12.6xx10^(-5)"Weber"//m^(2)`

Text Solution

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The correct Answer is:
C
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