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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 :

A

`IBL`

B

`(IBL)/pi`

C

`(IBL)/(2pi)`

D

`(IBL)/(4pi)`

Text Solution

Verified by Experts

The correct Answer is:
C
`2Tsin((dDelta)/2)=IdlB rArr2T(dDelta)/2=IRdlB rArrT=BIR=(BIL)/(2pi)`
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