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A metal ring of radius r =0.5m with its ...

A metal ring of radius `r =0.5m` with its plane noraml a unifrom magnetic field `B` of induction `0.2T` carries a current `I=100A` The tension in newtons develoed in the ring is

A

`100`

B

`50`

C

`25`

D

`10`

Text Solution

Verified by Experts

The correct Answer is:
D
`dF=2isin(theta)/(2)`
`IdlB =T .theta`
`IR theta B = Ttheta`
`T = IRB`
`T = 100 xx 0.5 xx 0.2`
`T =10 N`
.
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