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A conducting wire bent in the from of a parabola `y^(2)=2x` carries a current `i=2A` as shown in figure This wire is placed in a unifrom magnetic field
`oversetrarrB = - 4hatk` Tesla The magnetic force on the wire is (newton)
.

A

`-16 hat(i)`

B

`32 hat(i)`

C

`-32hat(i)`

D

`16hat(i)`

Text Solution

Verified by Experts

The correct Answer is:
B
At `x=2,y^(2)=2x=2xx2` or `y=2`

Thus separation,`AB=4cm`
The force, `F=Bi(AB)=4xx2xx4=32N`
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