A conducting rod AB of length l=1m is mo...

A conducting rod AB of length `l=1m` is moving at a velocity `v_A=4m//s` making an angle `30^@` with its length. A uniform magnetic field `B=2T` exists in a direction perpendicular to the plane of motion. Then

`V_(A)-V_(B)=8V`

`V_(A)-V_(B)=4V`

`V_(B)-V_(A)=8V`

`V_(B)-V_(A)=4V`

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