PHYS-224 Test #3 (Chapters 32, 33)
Things to remember:
- You are not responsible for material in sections 32.10,
33.6, and 33.10
- Anything we did in class is fair game - whether I did it on the board, or you did it in your student workbooks.
- Anything from the Mastering Physics homework is fair game.
- Anything from the reading assignments (Daily Quizzes) is fair game.
- You MUST show all work in order to receive full/partial credit. This includes multiple choice questions.
Conceptual things you should be able to do (ie, in addition to the homework type problems from Mastering Physics
- Indicate the direction of the magnetic field caused by a moving
point charge (student workbook pg. 32-4
#10-12)
- Indicate the direction of the magnetic field caused by a current
carrying wire (student workbook pg. 32-5
#13,14,15,16,18,19,20)
- Evaluate the integral of (B dot ds) around a specified closed
path (student workbook pg. 32-7
#21,22,24)
- Determine the direction of the magnetic force on a point charge
moving in a uniform magnetic field (student
workbook pg. 32-9 #27,28,29,31,32,33)
- Determine the magnitude and direction of the force between two
parallel current carrying wires. And/or determine the magnitude and
direction of the net force acting on a third wire due to two other
wires. (student workbook pg. 32-11
#35,36,40,41)
- Determine the direction of the induced current in a wire loop
(student workbook pg. 33-1 #1,2,3)
- Determine the magnetic flux through a loop (student workbook pg. 33-4 #8,11)
- Determine the direction of the induced current according to
Faraday's Law and Lenz's law (student workbook
pg. 33-7 #12,13,15a; pg. 33-12 #23)
Tasks which might involve numerical answers (most of which were
covered by the Mastering Physics homework)
- Use the Biot-Savart law to determine the magnitude and direction
of the magnetic field (similar problems 50,52,59 in
Chapter 32)
- Use ampere's law to determine the magnetic field inside and
outside a wire (similar to problem 83 in Chapter
32)
- determine mass of an unknown charged object based on its path in
a mass spectrometer (similar to the figure for
problem 70 in chapter 32)
- Determine the induced emf (or induced current) in a wire loop at
a specific time if
given the magnetic field (or area) as a function of time. (similar to MP 33.33 & the shrinking loop or
problems 25,27 from chapter 33)
- Numerical questions for which the equation sheet might come in
handy
- Calculate the magnitude of the magnetic field at a given distance
from a long wire, at the center of a circular loop
- Calculate the radius of the circular path followed by a charged
object moving in a uniform magnetic field
- Calculate the flux through a loop
- Calculate the current through a loop if given the magnetic field as a function of time.
and the geometry
- Anything else covered by Mastering Physics
REMEMBER: thesmart way to use a practice test is to actually take it as a test, not to just work through the questions. There is no guarantee your test will have the same questions as on this practice test.
Here's a the answers --- but don't look at these until after you have worked the practice test.