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 8.1, Problem 1aT
A copper wire loop is placed in a uniform magnetic field as shown. Determine whether there would be a current through the wire of the loop in each case below. Explain your answer in terms of magnetic forces exerted on the charges in the wire of the loop.
• The loop is stationary.
• The loop is moving to the right.
• The loop is moving to the left.
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In the figure (Figure 1) a conducting rod of length L = 32.0 cm
moves in a magnetic field B of magnitude 0.460 T directed into the
plane of the figure. The rod moves with speed v = 5.40 m/s in the
What is the potential difference between the ends of the rod?
direction shown.
Express your answer in volts.
ΑΣφ.
V =
V
Submit
Request Answer
Part B
• Part C
When the charges in the rod are in equilibrium, what is the magnitude of the electric field within the rod?
Express your answer in volts per meter.
Πνα ΑΣφ.
Figure
E =
V/m
Submit
Request Answer
Part D
Part E
• Part F
х а'х
What is the potential difference across the rod if it moves parallel to ab?
Express your answer in volts.
The magnitude of the magnetic field produced by a long, straight wire is proportional to the current passing through the wire and
inversely proportional to the distance from the wire.
Consider the five pairs of long, parallel wires shown. The arrows indicate the direction of the current in each wire, with small
arrows representing a current of 4 A and large arrows representing a current of 7 A. For each pair, determine in which one of the
regions the net magnetic field is zero someplace:
• on the left of both wires
• between the two wires
• on the right of both wires
none of the above (i.e., nowhere)
Do not consider distances very far from the wires since in this case the magnetic field always goes to zero.
Left
Between
Right
Nowhere
Answer Bank
Part E
In the figure, a conducting rod of length L = 31.0 cm
moves in a magnetic field B of magnitude 0.520 T
directed into the plane of the figure. The rod moves with
speed v = 5.00 m/s in the direction shown. (Figure 1)
What is the magnitude Via of the potential difference between the ends of the rod?
Express your answer in volts to at least three significant figures.
• View Available Hint(s)
V ΑΣφ
Via
V
%3D
Submit
Figure
1 of 1
Part F
What is the magnitude E of the motional emf induced in the rod?
Express your answer in volts to at least three significant figures.
View Available Hint(s)
L-
Πν ΑΣφ
V
В
E =
V
Chapter 8 Solutions
Tutorials in Introductory Physics
Ch. 8.1 - A copper wire loop is placed in a uniform magnetic...Ch. 8.1 - Suppose that the loop is now placed in the...Ch. 8.1 - In each of the diagram below, the position of a...Ch. 8.1 - D. State whether you agree or disagree with each...Ch. 8.1 - The diagram at right shows a stationary, copper...Ch. 8.1 - To understand the interaction between the wire...Ch. 8.1 - A wire loop moves from a region with no magnetic...Ch. 8.1 - At two later instants, t=t1andt=t1+t the loop is...Ch. 8.2 - The resistance of loop 2 is greater than that loop...Ch. 8.2 - Suppose that loop 2 were replaced by a wooden...
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