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 1cT
In each of the diagram below, the position of a loop is shown at two times,
The loop starts from rest in each case and is displaced to the right in Case A and to the left in Case B. On the diagrams indicate:
• the direction of the induced current through the wire of the loop,
• the magnetic moment of the loop,
• an area vector for each loop,
• the sign of the flux due to the external magnetic field (at both instants), and
• the sign of the induced flux (at both instants).
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Use the worked example above to help you solve this problem. A coil with 21 turns of wire is wrapped on a frame with a square cross-section 2.14 cm on a side. Each turn has the same area, equal to that of the frame, and the total resistance of the coil is 0.561 Ω. An applied uniform magnetic field is perpendicular to the plane of the coil, as in the figure.
Suppose the magnetic field changes uniformly from 0.540 T to 0.162 T in the next 0.666 s.
(a) Compute the induced emf in the coil. = V(b) Compute the induced current.I = A counterclockwise as viewed from above the coil
The diagram below shows two long parallel wires, 1 & 2, each carrying a current of 56 A. The direction of the current for each wire
is indicated in the diagram. The distance between the wires is 24 cm & the distance between wire 2 & point P is 26 cm. Use the
standard cartesian coordinate system.
A.) At P, determine the directions of B, & B2.
direction of B, at P = Choose direction
Choose direction
P
direction of B2 at P ="
B.) Determine the x & y components of B, at P.
B1X
= OT
B1Y
C.) Determine the x & y components of B2 at P.
B2x
B2y
D.) Determine the magnitude & direction of Bnet at P.
Bnet
direction of Bnet
o to the VERTICAL in
--- Choose quadrant ---
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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