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A ring of the radius R is placed in the ...

A ring of the radius R is placed in the y - z plane and it carries a current i. The conducting wires which are used to supply the current to the ring can be assumed to be vary long and are placed as shown in the figure. The magnitude of the magnetic field at the centre of the ring A is

A

`(mu_(i)i)/(4piR)sqrt(2(2pi^(2)-2pi+1))`

B

`(mu_(0)i)/(4piR)sqrt(3(2pi^(2)-2pi+1))`

C

`(mu_(0)i)/(4piR)sqrt(3(2pi^(2)+2pi-1))`

D

`(mu_(0)i)/(3piR)sqrt(3(2pi^(2)+2pi+1))`

Text Solution

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The correct Answer is:
A
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