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Figure shows an isosceles triangle wire ...

Figure shows an isosceles triangle wire frame with apex angle equal to `(pi)//2`. The frame starts entering into the region of uniform magnetic field B with constant velocity v at t =0. The longest side of the frame is perpendicular to the direction of velocity. If i is the intantaneous current through the frame then choose the alternative showing the correct variation of i with time.

A

B

C

D

Text Solution

Verified by Experts

The correct Answer is:
D
`phi = BA = B[1/2 (2x)(x)]`

`phi = Bx^(2)`
`| epsilon | =(d phi)/(dt)=2Bx*v`
` I= (omega)/(R) =((2Bv)/(R))x`.
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