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AP Physics C: E&M
13.3 Induced Currents and Magnetic Forces
13.2 Electromagnetic Induction
13.1 Magnetic Flux
BeginnerMCQMathematicalProportional AnalysisConceptual15.4k
Three concentric wire loops in a uniform changing magnetic field.
Three concentric wire loops in a uniform changing magnetic field.
Three concentric, coplanar circular wire loops—Loop 1, Loop 2, and Loop 3—have radii \(r\), \(2r\), and \(3r\), respectively. The loops are placed in a spatially uniform magnetic field directed perpendicular to the plane of the loops. The magnitude of the magnetic field increases at a constant rate \(\dfrac{dB}{dt}\). All three loops are made from the same wire material with a uniform resistance per unit length. Which of the following correctly ranks the magnitudes of the induced currents \(I_1\), \(I_2\), and \(I_3\) in the loops?

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