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

A long solenoid has 200 turns per cm and carries a current of 2.5 amps. The magnetic field at its centre is `(mu_(0)=4pixx10^(-7)"weber"//amp-m)`

A

`3.14xx10^(-2)"weber"//m^(2)`

B

`6.28xx10^(-2)"weber"//m^(2)`

C

`9.42xx10^(-2)"weber"//m^(2)`

D

`12.56xx10^(-2)"weber"//m^(2)`

Text Solution

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The correct Answer is:
B
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ERRORLESS -MAGNETIC EFFECT OF CURRENT-Exercise
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