Your Textbook EditionPricingAbout UsFeaturesReviewsFAQContact
Get startedLog in
Giancoli 7th Edition textbook cover
Giancoli's Physics: Principles with Applications, 7th Edition
21
Electromagnetic Induction and Faraday's Law
Change chapter
21-1 to 21-4: Faraday's Law of Induction
1
play arrow0:57
2
play arrow1:26
3
play arrow1:46
4
play arrow2:57
5
play arrow1:19
6
play arrow1:33
7
play arrow2:00
8
play arrow3:42
9
play arrow1:40
10
play arrow2:56
11
play arrow4:51
12
play arrow1:55
13
play arrow2:32
14
play arrow3:37
15
play arrow1:03
16
play arrow1:13
17
play arrow1:11
18
play arrow5:37
19
play arrow3:31
21-5: Generators
20
play arrow2:31
21
play arrow2:31
22
play arrow1:00
23
play arrow6:07
21-6: Back EMF and Torque
24
play arrow1:04
25
play arrow1:38
26
play arrow2:30
21-7: Transormers
27
play arrow0:44
28
play arrow0:57
29
play arrow1:28
30
play arrow1:11
31
play arrow1:10
32
play arrow1:30
33
play arrow1:02
34
play arrow2:06
35
play arrow3:34
36
play arrow1:06
37
play arrow5:30
38
play arrow3:22
21-10: Inductance
39
play arrow0:41
40
play arrow1:04
41
play arrow2:04
42
play arrow1:31
43
play arrow2:32
44
play arrow0:43
45
play arrow4:25
46
play arrow3:02
21-11: Magnetic Energy Storage
47
play arrow1:04
48
play arrow1:46
49
play arrow1:52
21-12: LR Circuit
50
play arrow1:49
51
play arrow2:04
52
play arrow2:26
53
play arrow1:57
21-13: AC Circuits and Reactance
54
play arrow0:56
55
play arrow0:32
56
play arrow0:42
57
play arrow0:48
58
play arrow0:41
59
play arrow1:05
21-14: LRC Circuits
60
play arrow0:19
61
play arrow0:54
62
play arrow1:00
63
play arrow0:49
64
play arrow2:07
65
play arrow1:24
66
play arrow2:16
67
play arrow6:31
68
play arrow2:17
21-15: Resonance in AC Circuits
69
play arrow0:27
70
play arrow2:51
71
play arrow2:06
72
play arrow6:43
73
play arrow2:48
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 17
Q

In Fig. 21–11, the rod moves with a speed of 1.6 m/s on rails 30.0 cm apart. The rod has a resistance of 2.5  Ω2.5 \; \Omega. The magnetic field is 0.35 T, and the resistance of the U-shaped conductor is 21.0  Ω21.0 \; \Omega at a given instant. Calculate

  1. the induced emf,
  2. the current in the conductor, and
  3. the external force needed to keep the rod’s velocity constant at that instant.
A conducting rod is moved to the right on a U-shaped conductor in a uniform magnetic field B that points out of the page. The induced current is clockwise.
Figure 21-11 (a) A conducting rod is moved to the right on a U-shaped conductor in a uniform magnetic field B⃗\vec{B} that points out of the page. The induced current is clockwise.
Upward force on an electron in the metal rod (moving to the right) due to B pointing out of the page; hence electrons can collect at the top of the rod, leaving + charge at the bottom.
Figure 21-11 (b) Upward force on an electron in the metal rod (moving to the right) due to B⃗\vec{B} pointing out of the page; hence electrons can collect at the top of the rod, leaving + charge at the bottom.
A
  1. 0.17 V0.17 \textrm{ V}
  2. 7.1×10−3 A7.1 \times 10^{-3} \textrm{ A}
  3. 7.5×10−4 N7.5 \times 10^{-4} \textrm{ N}
Giancoli 7th Edition, Chapter 21, Problem 17 solution video poster
Padlock

In order to watch this solution you need to have a subscription.

Get Started
View sample solution

|

Log in
Privacy policyTerms of serviceHelp center

Find us on:

Facebook iconTrustpilot icon
Giancoli Answers, including solutions and videos, is copyright © 2009-2024 Shaun Dychko, Vancouver, BC, Canada. Giancoli Answers is not affiliated with the textbook publisher. Book covers, titles, and author names appear for reference purposes only and are the property of their respective owners. Giancoli Answers is your best source for the 7th and 6th edition Giancoli physics solutions.