Giancoli's Physics: Principles with Applications, 7th Edition
21
Electromagnetic Induction and Faraday's Law
Change chapter21-1 to 21-4: Faraday's Law of Induction
21-5: Generators
21-6: Back EMF and Torque
21-7: Transormers
21-10: Inductance
21-11: Magnetic Energy Storage
21-12: LR Circuit
21-13: AC Circuits and Reactance
21-14: LRC Circuits
21-15: Resonance in AC Circuits
Question by Giancoli, Douglas C., Physics: Principles with Applications, 7th Ed., ©2014, Reprinted by permission of Pearson Education Inc., New York.
Problem 2
Q
The north pole of the magnet in Fig.21–57 is being inserted into the coil. In which direction is the induced current flowing through resistor R? Explain.
Figure 21-57.
A
from right to left
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COMMENTS
By jhessica90 on Sat, 4/2/2022 - 12:47 AM
why is the magnetic field lines pointing to the right out of the North Pole? Don't the lines of from north to south?
By Mr. Dychko on Mon, 4/4/2022 - 2:14 PM
Hi jhessica, thank you for the question. You're quite right that magnetic field lines go from North to South, but keep in mind that this is true outside of the magnet when lines are travelling through space. If I'm guessing correctly, were you expecting the field lines to go from N to S within the magnet? The field lines are meant to emanate from the North end of the magnet, pointing away from North, and travel in a loop around the magnet and re-enter the magnet on the South end.
Hope this hellps,
Shaun
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