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A rod of length l is moving velocity v "...

A rod of length `l` is moving velocity `v` "in magnetic field" `b` as seen in . Find the emf induced in all three cases.
(a)

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(a)
`emf = 0` as `vec(B)|\|vec(v)`
(b)
`emf = 0` as `vec(l)|\|vec(v)`
( c)
`emf = 0` as `vec(l)|\|vec(B)`
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