An infinitely long straight conduction i...

An infinitely long straight conduction is bent into the shape as shown in the figure . It carries a current of I ampere and the radius of the circular loop is r metre. Then the magnetic induction at its centre will be

`(mu_(0))/(4pi)(2i)/(r)(pi+1)`

`(mu_(0))/(4pi)(2i)/(r)(pi-1)`

zero

Infinite

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