All questions
AP Physics 2
12.4 Electromagnetic Induction and Faraday’s Law
AdvancedMCQMathematical14.3k
A long cylindrical solenoid of radius R is shown in perspective. Along its central longitudinal axis, two circular wire loops are drawn co-axially. Loop 1 is located inside the solenoid with a radius r_1 less than R. Loop 2 surrounds the solenoid with a radius r_2 greater than R. Both loops are oriented perpendicular to the central axis. Arrows indicate the radii R, r_1, and r_2 clearly. No other labels, lines, text, or axes appear.
Concentric loops located inside and outside a long solenoid.
A long ideal solenoid with radius \(R\) and \(n\) turns per unit length carries a time-varying current \(I(t)\). Two single-turn circular wire loops are placed concentric with the solenoid central axis, both oriented in planes perpendicular to the axis. Loop 1 has radius \(r_1 < R\), and Loop 2 has radius \(r_2 > R\). If the current in the solenoid changes at a constant rate \(\dfrac{\Delta I}{\Delta t}\), what is the ratio of the magnitude of the induced electromotive force in Loop 1 to that in Loop 2, \(\dfrac{\mathcal{E}_1}{\mathcal{E}_2}\)?

Log In to Continue

Accounts are free! Log in to try this question, see explanations, save progress, and more!

Tools for a 5