A radial conducting rod extends from radius a to radius b and rotates about the common axis with angular speed ω in a uniform axial magnetic field B. Find the potential difference magnitude between its ends.
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Question

A radial conducting rod extends from radius a to radius b and rotates about the common axis with angular speed ω in a uniform axial magnetic field B. Find the potential difference magnitude between its ends.

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G1 Physics · Accepted Answer

Integrating dε=Bωrdr from a to b gives ε=(Bω/2)(b²−a²).