current I floWS in the long wire, in the direction shown. (a) Calculate the magnitue the net emf ɛ induced in the loop. Do this two ways: (i) by using Faraday’s la induction and (ii) by looking at the emf induced in each segment of the loop due motion. (b) Find the direction (clockwise or counterclockwise) of the current ind in the loop. Do this two ways: (i) using Lenz's law and (ii) using the magnetic force on charges in the loop. (c) Check your answer for the emf in part (a) in the following special cases to see b whether it is physically reasonable: (i) The loop is stationary; (ii) the loop is very thin, so a -> 0; (iii)

current I floWS in the long wire, in the direction shown. (a) Calculate the magnitue the net emf ɛ induced in the loop. Do this two ways: (i) by using Faraday’s la induction and (ii) by looking at the emf induced in each segment of the loop due motion. (b) Find the direction (clockwise or counterclockwise) of the current ind in the loop. Do this two ways: (i) using Lenz's law and (ii) using the magnetic force on charges in the loop. (c) Check your answer for the emf in part (a) in the following special cases to see b whether it is physically reasonable: (i) The loop is stationary; (ii) the loop is very thin, so a -> 0; (iii)

College Physics

11th Edition

ISBN:9781305952300

Author:Raymond A. Serway, Chris Vuille

Publisher:Raymond A. Serway, Chris Vuille

Chapter1: Units, Trigonometry. And Vectors

Section: Chapter Questions

Problem 1CQ: Estimate the order of magnitude of the length, in meters, of each of the following; (a) a mouse, (b)...

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Concept explainers

Ferromagnetism

Ferromagnetism is a mechanism by which some materials show magnetic properties. Iron and magnetite, an oxide of iron, are two naturally occurring materials that show the property of ferromagnetism. The word ferromagnetism is derived from the Latin name of iron, "Ferrum" as it was the first observed material to show such property. The property of ferromagnetism is shown by only a few substances such as iron, nickel, cobalt, and their alloys. Some transition metals and alloys of rare-earth metals also show ferromagnetism.

Question

1. In the figure, the loop is being pulled to the right at constant speed v. A constant
current I flows in the long wire, in the direction shown. (a) Calculate the magnitude of
the net emf ɛ induced in the loop. Do this two ways: (i) by using Faraday’s law of
induction and (ii) by looking at the emf induced in each segment of the loop due to its
motion. (b) Find the direction (clockwise or counterclockwise) of the current induced
in the loop. Do this two ways: (i) using Lenz's
law and (ii) using the magnetic force on charges
a
in the loop. (c) Check your answer for the emf in
part (a) in the following special cases to see
whether it is physically reasonable: (i) The loop is
stationary; (ii) the loop is very thin, so a -> 0; (iii)
the loop gets very far from the wire. (Problem
29.53).

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