A thin flexible wire of length L is conn...

A thin flexible wire of length L is connected to two adjacent fixed points and carries a current I in the clockwise direction, as shown in the figure. When the system is put in a uniform magnetic field of strength B going into the plane of the paper, the wire takes the shape of a circle. The tension in the wire is :

IBL

`(IBL)/pi`

`(IBL)/(2pi)`

`(IBL)/(4pi)`

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