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A wire of length L carrying a current I ...

A wire of length L carrying a current I is bent into a circle. The magnitude of the magnetic field at the centre of the circle is

A

`(pi^(2) I)/l xx 10^(-7)`

B

`(pi I)/l xx 10^(-7)`

C

`(pi I)/l^(2) xx 10^(-7)`

D

`(pi I^(2))/l xx 10^(-7)`

Text Solution

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The correct Answer is:
a
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