Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
12th Edition
ISBN: 9781259587399
Author: Eugene Hecht
Publisher: McGraw-Hill Education
expand_more
expand_more
format_list_bulleted
Videos
Textbook Question
Chapter 34, Problem 18SP
Determine the back emf induced in a coil whose self-inductance is 8.20 mH when the current through the coil is changing at a constant rate of 100 A per second. [Hint: Use the defining expression for L, Eq. (34.2).]
Expert Solution & Answer
Want to see the full answer?
Check out a sample textbook solution
Students have asked these similar questions
A 20.0 V emf is applied to a coil with an inductance of 40.0 mH and a resistance of 0.500 Ω.
a) Determine the energy stored in the magnetic field when the current reaches 1/4 of its maximum value. (Answer in J and to two decimal places)
b) How long does it take for the current to reach this value? (Answer in s and to four decimal places)
An inductor has a current I(t) = (0.480 A) cos[(260 s-1)t] flowing through it. If the maximum emf
%3D
across the inductor is equal to 0.530 V, what is the self-inductance of the inductor, in mH?
A 110-V hair dryer is rated at 1200 W. What current will it draw when operating from a 110-V
electrical outlet?
A small glass bead has been charged to 4.5 nC. What is the magnitude of the electric field 2.0 cm
from the center of the bead? (k = 1/4nE 0 = 8.99 x 10° N. m2/C2)
%3D
Two coils are placed close to each other. One of the coils has a current passing through it given by the function i(t) = 12.0 sin
(1.50 x 10³t). If the mutual inductance between the coils is 150 µH, what will be the peak emf in the coil?
Chapter 34 Solutions
Schaum's Outline of College Physics, Twelfth Edition (Schaum's Outlines)
Ch. 34 - 15. Show that 1.00 Wb = 1.00 V • s. [Hint: Use...Ch. 34 - 16. Show that 1.00 T = 1.00 N/A • m. [Hint: Use...Ch. 34 - 17. Show that 1.00 H = 1.00 T • m2 / A. [Hint: Use...Ch. 34 - 18. Determine the back emf induced in a coil whose...Ch. 34 - Prob. 19SPCh. 34 - Prob. 20SPCh. 34 - Prob. 21SPCh. 34 - Prob. 22SPCh. 34 - Prob. 23SPCh. 34 - Prob. 24SP
Ch. 34 - Prob. 25SPCh. 34 - Prob. 26SPCh. 34 - Prob. 27SPCh. 34 - Prob. 28SPCh. 34 - 29. Show that (a) 1 N/A2 = 1 T • m /A = 1 Wb/A • m...Ch. 34 - 30. A series circuit consisting of an uncharged...Ch. 34 - 31. A charged capacitor is connected across a...Ch. 34 - Prob. 32SPCh. 34 - Prob. 33SPCh. 34 - Prob. 34SPCh. 34 - Prob. 35SPCh. 34 - Prob. 36SP
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, physics and related others by exploring similar questions and additional content below.Similar questions
- Suppose that a rectangular toroid has 2000 windings and a self-inductance of 0.040 H. If h = 0.10 m, what is the current flowing through a rectangular toroid when the energy in its magnetic field is 2.0 × 10-6 J?arrow_forwardA conducting coil, with current i(t) = 5.40e-0.0250+ sin(120mt), withi in amperes and t in seconds, is placed next to a second coil, end to end. At t = 0.720 s, a lab tech measures the emf across the second coil, and the result is -3.50 V. What is the mutual inductance (in mH) of the coils? mHarrow_forwardTwo coils are placed close to each other and have a mutual inductance of 150 µH. The current through one coil is given by, I(t)=5sin(1000t). Estimate the time when the emf will be maximum on the second coil.arrow_forward
- A coil has 3.45 Ω resistance and 450 mH inductance. If the current is 3.92 A and is increasing at a rate of 3.64 A/s, what is the potential difference across the coil at this moment?arrow_forwardA coil has 2.55-Ω resistance and 121-mH inductance. If the current is 3.00 A and is increasing at a rate of 3.80 A/s , what is the potential difference across the coil at this moment?arrow_forwardTwo coils have a mutual inductance of 480mH. One coil is supplied with a current given by I(t) = 3t2 – 2t - 6, where I(t) is in amperes and t in seconds. What is the induced EMF in the other coil at t=3.5s?arrow_forward
- When a current of 2A is passed through a coil of 100 turns, the flux associated with is 5 x 105 Wb/turn. The self inductance of the coil isarrow_forward4.30 2 3. L In the circuit the emf ɛ = 19.5 volts and the inductance L= 107 mH. What will be the energy in Joules in the magnetic field closed? (State answer with 3 digits right of decimal. Do not enter unit.) the inductor 13.2 ms after the switch is llarrow_forwardAn induced emf of 2.0 V is measured across a coil of 50 closely wound turns while the current through it increases uniformly from 0.0 to 5.0 A in 0.10 s. (a) What is the self-inductance of the coil? (b) With the current at 5.0 A, what is the flux through each turn of the coil?arrow_forward
- 4.30 N L In the circuit the emf ɛ = 21.3 volts and the inductance L= 150 mH. What will be the energy in Joules in the magnetic field of the inductor 15.5 ms after the switch is closed? (State answer with 3 digits right of decimal. Do not enter unit.) %3D ellarrow_forward4.30 2 3. In the circuit the emf e= 19.5 volts and the inductance L=107 mH. What will be the energy in Joules in the magnetic field of the inductor 13.2 ms after the switch is closed? (State answer with 3 digits right of decimal. Do not enter unit.)arrow_forwardTwo coils have a mutual inductance of 2.34 x 10 4H. The current in the first coil increases at a uniform rate of 857A/s. If the resistance of the second coil is 62, what is the magnitude of the induced current (in mA) in the second coil? Answer:arrow_forward
arrow_back_ios
SEE MORE QUESTIONS
arrow_forward_ios
Recommended textbooks for you
What is Electromagnetic Induction? | Faraday's Laws and Lenz Law | iKen | iKen Edu | iKen App; Author: Iken Edu;https://www.youtube.com/watch?v=3HyORmBip-w;License: Standard YouTube License, CC-BY