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A rod PQ of length l is rotating about e...

A rod `PQ` of length `l` is rotating about end `P`, with an angular velocity `omega`. Due to electrifugal forceed the free electrons in the rod move toward the end `Q` and an emf is created. Find the induced emf.

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The accumulation of free electrons will create an electric field which will finally balance the centrifugal forces and a steady state will be reached.In the steady state `m_(e)omega^(2)x= E`
`V_(P)-V_(Q)=underset(x=0)overset(x=l)int barE.bar(dx)=underset(0)overset(l)int(m_(e)omega^(2)x)/edx=(m_(e)omega^(2)l^(2))/(2e)`
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