A conducting rod of length L rotates with angular speed ω about one end in a uniform magnetic field B perpendicular to the plane of rotation. Find the potential difference between its ends.
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A conducting rod of length L rotates with angular speed ω about one end in a uniform magnetic field B perpendicular to the plane of rotation. Find the potential difference between its ends.

G1 Physics · Accepted Answer

An element at radius r has speed ωr and contributes dε=Bωr dr. Integrating from 0 to L gives ε=BωL²/2.