(a)
Induced emf at t < 0 s
Answer to Problem 20QAP
Induced emf at t < 0 s=
Explanation of Solution
Given info:
Formula used:
Calculation:
Conclusion:
Induced emf at t < 0 s=
(b)
Induced emf at t =5.0 s
Answer to Problem 20QAP
Induced emf at t =5.0 s=
Explanation of Solution
Given info:
Formula used:
Calculation:
Conclusion:
Induced emf at t =5.0 s=
(c)
Induced emf at t < 10 s
Answer to Problem 20QAP
Induced emf at t < 10 s=
Explanation of Solution
Given info:
Formula used:
Calculation:
Conclusion:
Induced emf at t < 10 s=
(d)
Plot the magnetic field and induced emf as functions of time
Answer to Problem 20QAP
Explanation of Solution
Given info:
Time (s) | Magnetic field (T) | induced emf (V) |
-10 | 1 | 0 |
-5 | 1 | 0 |
0 | 1 | 0 |
1 | 1.03 | 0.0025434 |
2 | 1.06 | 0.0025434 |
3 | 1.09 | 0.0025434 |
4 | 1.12 | 0.0025434 |
5 | 1.15 | 0.0025434 |
6 | 1.18 | 0.0025434 |
7 | 1.21 | 0.0025434 |
8 | 1.24 | 0.0025434 |
9 | 1.27 | 0.0025434 |
10 | 1.3 | 0.0025434 |
15 | 1.3 | 0 |
20 | 1.3 | 0 |
Formula used:
Calculation:
emf at 1 s as shown below, all the emf values were calculated like that by substituting the magnetic field at particular time.
Conclusion:
Graphs were drawn in the answer section.
Want to see more full solutions like this?
Chapter 20 Solutions
COLLEGE PHYSICS
- A flat, square coil of 20 turns that has sides of length 15.0 cm is rotating in a magnetic field of strength 0.050 T. If tlie maximum emf produced in die coil is 30.0 mV, what is the angular velocity of the coil?arrow_forwardSuppose 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 circular loop of wire with a radius of 4.0 cm is in a uniform magnetic field of magnitude 0.060 T. The plane of the loop is perpendicular to the direction of the magnetic field. In a time interval of 0.50 s, the magnetic field changes to the opposite direction with a magnitude of 0.040 T. What is the magnitude of the average emf induced in the loop? (a) 0.20 V (b) 0.025 V (c) 5.0 mV (d) 1.0 mV (e) 0.20 mVarrow_forward
- A 50-turn coil has a diameter of 15 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.50 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil if the magnetic field is reduced to zero uniformly in (a) 0.10 s, (b) 1.0 s, and (c) 60 s.arrow_forwardA 5000-pF capacitor is charged to 100 V and then quickly connected to an 80-mH inductor. Determine (a) the maximum energy stored in the magnetic field of the inductor, (b) the peak value of the current, and (c) the frequency of oscillation of the circuit.arrow_forwardA metal bar of length 25 cm is placed perpendicular to a uniform magnetic field of strength 3 T. (a) Determine the induced emf between the ends of the rod when it is not moving, (b) Determine the emf when the rod is moving perpendicular to its Length and magnetic field with a speed of 50 cm/s.arrow_forward
- A coil with 50 turns and area 10cm2 is oriented with its plane perpendicular to a 0.75-T magnetic field. If the coil is flipped over (rotated through 180°) in 0.20 s, what is the average emf induced in it?arrow_forwardThe magnetic field through a circular loop of radius 10.0 cm varies with time as shown below. The field is perpendicular to the loop. Plot the magnitude of the induced emf in the loop as a inaction of time.arrow_forwardIn a 250-turn automobile alternator, the magnetic flux in each turn is B, = 2.50 104 cos t, where is in webers, is the angular speed of the alternator, and t is in seconds. The alternator is geared to rotate three times for each engine revolution. When the engine is running at an angular speed of 1.00 103 rev/min, determine (a) the induced emf in the alternator as a function of time and (b) the maximum emf in the alternator.arrow_forward
- Principles of Physics: A Calculus-Based TextPhysicsISBN:9781133104261Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningPhysics for Scientists and Engineers: Foundations...PhysicsISBN:9781133939146Author:Katz, Debora M.Publisher:Cengage Learning
- Physics for Scientists and Engineers, Technology ...PhysicsISBN:9781305116399Author:Raymond A. Serway, John W. JewettPublisher:Cengage LearningGlencoe Physics: Principles and Problems, Student...PhysicsISBN:9780078807213Author:Paul W. ZitzewitzPublisher:Glencoe/McGraw-Hill