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AP Physics 2
12.4 Electromagnetic Induction and Faraday’s Law
IntermediateMCQMathematicalConceptual21.3k
Three circular wire loops labeled X, Y, and Z are shown in a region with a uniform magnetic field B directed into the page, indicated by a regular grid of x symbols. Loop X is drawn as a small circle. Loop Y is drawn as a circle with twice the radius of Loop X. Loop Z is drawn as a circle identical in size to Loop Y. No other labels, lines, text, or axes appear.
Three circular loops in a uniform perpendicular magnetic field.
Three circular conducting loops, X, Y, and Z, lie flat in a uniform magnetic field directed perpendicular to the plane of the loops. The magnitude of the magnetic field increases at a constant rate \(\Delta B/\Delta t\). The radii and total electrical resistances of the three loops are given in the table.

LoopRadiusResistance
X\(r_0\)\(R_0\)
Y\(2r_0\)\(2R_0\)
Z\(2r_0\)\(4R_0\)

Which of the following correctly ranks the magnitude of the average induced current \(I\) in the three loops during this time interval?

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