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AP Physics C: E&M
12.3 Magnetic Fields of Current-Carrying Wires and the Biot-Savart Law
AdvancedMCQMathematical23k
Rotating charged disk with ring element.
Rotating charged disk with ring element.
A flat nonconducting disk of radius \(R\) carries a total electric charge \(Q\) distributed uniformly over its surface. The disk rotates about its central symmetry axis perpendicular to its plane at a constant angular frequency \(\omega\). Which of the following expressions represents the magnitude of the magnetic field at the center of the disk?

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