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 2bTH
Five loops of copper wire of same gauge (cross−sectional area). Loops 1−4 are identical; loop
5 has the same height as the others but is longer. At the instant shown, all the loops are moving at the same speed in the directions indicated.
There is a uniform magnetic field pointing out of the page in region I; in region II there is no magnetic field. Ignore any interactions between the loops.
b. Rank the magnitudes of the emfs around the loops. Explain your reasoning.
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In the figure (Figure 1) the top wire is 1.2-mm -diameter copper wire and is suspended in
air due to the two magnetic forces from the bottom two wires. The current flow through the
two bottom wires is 96 A in each.
Part A
Calculate the required current flow in the suspended wire.
Express your answer using two significant figures.
15| ΑΣΦ
Icu =
Submit
Request Answer
?
A
Criterion A: Knowing and understanding
i. state scientific knowledge. (Max. 2 points)
A wire loop is moved from outside the magnetic field until it is fully inside the magnetic field. The
initial magnetic flux is 0 Wb, and the change in magnetic flux is 2.5 Wb. The magnetic field has a
strength of 0.031 T.
Calculate the area of the wire loop.
The following equations may be useful:
AP =
D = BLA
Round your answer to 3 significant figures.
BA
2.5 Wb
A
0.031 T
A =
m²
||
||
The metal rod (shown below) moves to the right on essentially zero-resistance and zerofriction rails at a speed v = 3.0 m/s. The magnetic field B = 0.75T everywhere in the region.a. What is the current through the 5.0-Ω resistor? b. Does the current circulate clockwise or counterclockwise?c. What is the rate at which the resistor produces heat (i.e., the power dissipated bythe resistor)?d. The rod moves 3.0 m/s to the right because an external agent is exerting a constantforce on it to the right. What is the magnitude of this force? e. Use your answer to part (d) to find the rate at which the external agent does workon the rod.f. Discuss the significance of your results for parts (c) and (e).
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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