Tutorials in Introductory Physics

1st Edition

ISBN: 9780130970695

Author: Peter S. Shaffer, Lillian C. McDermott

Publisher: Addison Wesley

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Textbook Question

Chapter 22.2, Problem 1bTH

Suppose the loop were replaced by a second loop that is identical to the first except for a small cut in it (as shown). The loop is rotated as before.

- How does the maximum induced emf in the uncut loop compare to the maximum induced emf in the cut loop? Explain.
- How does the maximum induced current in the uncut loop compare to the maximum induced current in the cut loop? Explain your reasoning.

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As shown below, a wire loop is immersed in a constant uniform B-field (all across the screen & beyond) that is pointing down. The loop's area is
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A 8-turn generator coil with area 0.155 m^2 rotates in a 1.20 T magnetic field. At what frequency should the coil rotate to produce a peak emf of 150, expressed four sig figs with approp units.
Attached are self notes. If you help me with the symbology... I know that f = frequency. I am not at clear the other symbols.

The problem below explores the basic principles behind electric generators, which we will discuss in class in detail.
A 505 turn circular loop coil with a diameter of 3.9cm is initially held perpendicular to the Earth's magnetic field. The coil is then rotated in 7.6ms by 90 degrees, so the plane of the coil is parallel to the magnetic field. The average emf induced in the coil is 7.2V. Find the value of the Earth's magnetic field (in T) inducing the current in the coil.As an approximation, assume that the magnetic flux in the coil changes at a constant rate between its maximum and minimum values.
Note that (see the previous problem) the flux through the coil is 505 times larger than if it was made out of one wire loop.

# Chapter 22 Solutions

Tutorials in Introductory Physics

Ch. 22.1 - Use Lenz’ law to predict whether current will flow...Ch. 22.1 - For each of the cases in which you predicted that...Ch. 22.1 - Suppose that the radius of the loop were...Ch. 22.1 - Check your answer regarding the direction of the...Ch. 22.1 - Find: the direction of the magnetic moment of the...Ch. 22.1 - A copper wire loop is initially at rest in a...Ch. 22.2 - On the two diagrams below, indicate the direction...Ch. 22.2 - Suppose the loop were replaced by a second loop...Ch. 22.2 - Five loops of copper wire of same gauge...Ch. 22.2 - Five loops of copper wire of same gauge...

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