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AP Physics 2
12.4 Electromagnetic Induction and Faraday’s Law
IntermediateMCQMathematicalConceptual13.2k
A copper disk of radius \(R\) rotating at angular speed \(\omega\) in a uniform magnetic field \(\vec{B}\).
A copper disk of radius \(R\) rotating at angular speed \(\omega\) in a uniform magnetic field \(\vec{B}\).
A flat, circular copper disk of radius \(R\) rotates about its central axis with a constant angular speed \(\omega\). A uniform magnetic field of magnitude \(B\) is directed perpendicular to the surface of the disk. Stationary electrical brushes touch the central axle and the outer rim of the disk to connect them across an external resistor, forming a closed circuit.

Which of the following statements correctly identifies the potential difference \(\Delta V\) generated between the central axle and the outer rim, along with the physical explanation for its generation?

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