Download 1 - Peoria Public Schools

Physics 1
Section Review19-2
Name
pp 670-672
1. Describe the magnetic field produced by an electric current in a long straight wire:
2. What happens to the magnetic field near a long straight wire if the current in the wire is reversed?
3. As you get further away from a straight wire carrying an electric current, what happens to the strength of
the magnetic field?
4. What happens to the strength of the magnetic field created by a current in a long straight wire as the
current increases?
5. How do you predict the direction of the magnetic field of a current-carrying straight wire?
6. How would you make a solenoid?
7. How is an electromagnet related to a solenoid?
8. Where is the magnetic field created by a current in a solenoid the strongest?
9. How does domain theory explain why putting an iron rod in a solenoid increase the magnetic field?
Physics 1
Section Review 19-3
Name
pp 673-679
10. What factors determine the magnitude of the magnetic force on a charge?
11. How does the direction of the magnetic force on a moving charge related to the direction of the velocity
of the charge and the direction of the magnetic field?
12. What is the magnetic force on a charge moving parallel (or anti-parallel) to a magnetic field?
13. What is the symbol for a magnetic field?
14. What is the SI unit for magnetic field strength?
15. How can you find the direction of the magnetic force on a moving charge?
16. Why can a magnetic force make a charge move in a circular path?
17. What causes the force on a (current-carrying) wire in a magnetic field?
18. Why would having more (current-carrying) wire in a magnetic field make the magnetic force on the wire
19. What would be the force on a current-carrying wire that is parallel to the magnetic field?
20. Why do two parallel conducting wires exert a magnetic force on each other?
21. Why does changing the current through a loudspeaker make the “cone” of a speaker move?