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A rod PQ of length 2I is rotating about ...

A rod `PQ` of length `2I` is rotating about one end `P` in a uniform magnetic field `B` which is perpendicular to the plane of rotation of the rod.Point `M` is the mid point of the rod.Find the induced `emf` between `M & Q` if that between `P & Q=100V`.

Text Solution

Verified by Experts

`E_(MQ)+E_(PM)=E_(PQ)`
`E_(PM)=(Bwl^(2))/(2)=100`
`E_(MQ)+(B omega((l)/(2))^(2))/(2)=(B omegal^(2))/(2)implies E_(MQ)=(3)/(8)B omegal^(2)=(3)/(4)xx100V=75V`
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