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A long solenoid has 20 turns per cm and ...

A long solenoid has 20 turns per cm and carries a current i. the magnetic field at its centre is `6.28xx10^(-2)Wb//m^(2)`. Another long solenoid has 100 turns per cm and it carries a current `i//3` . The value of the magnetic field at its centre is

A

`1.05xx10^(-2)Wb//m^(2)`

B

`1.05xx10^(-3)Wb// m^(2)`

C

`1.05xx10^(-3)Wb//m^(2)`

D

`1.05xx10^(-4)Wb//m^(2)`

Text Solution

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The correct Answer is:
A
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