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# Electricity and Magnetism Quiz for AP Physics B & C

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By — McGraw-Hill Professional
Updated on Feb 14, 2011

Are you getting ready to take the AP physics exam? Before you begin studying, find out what you know and you don't know with these four fundamental quizzes:  Mechanics Quiz for AP Physics B & C , Thermodynamics and Fluid Mechanics Quiz for AP Physics B & CElectricity and Magnetism Quiz for AP Physics B & C , and Waves, Optics, Atomic and Nuclear Physics Quiz for AP Physics B & C

It's okay if you didn't get every question on all of the fundamentals quizzes correct.  The whole point of these quizzes is for you to determine where to focus your study.

It's a common mistake to "study" by doing 20 problems on a topic on which you are already comfortable. But that's not studying … that's a waste of time. You don't need to drill yourself on topics you already understand! It's also probably a mistake to attack what for you is the toughest concept in physics right before the exam. Virtually every student has that one chapter they just don't get, however hard they try. That's okay … (as long as it's only one chapter.)

These fundamentals quizzes can tell you exactly what you should and should not study. Did you give correct answers with full confidence in the correctness of your response? In that case, you're done with that topic. No more work is necessary. The place to focus your efforts is on the topics where either you gave wrong answers that you thought were right, or right answers that you weren't really sure about.

Here is the electricity and magnetism quiz.

### Problems

1. Given the charge of a particle and the electric field experienced by that particle, give the equation to determine the electric force acting on the particle.
2. Given the charge of a particle and the magnetic field experienced by that particle, give the equation to determine the magnetic force acting on the particle.
3. What are the units of magnetic flux? What are the units of EMF?
4. A wire carries a current to the left, as shown below. What is the direction and magnitude of the magnetic field produced by the wire at point P?
5. When is the equation kQ/r2 valid? What is this an equation for?
6. The electric field at point P is 100 N/C; the field at point Q, 1 meter away from point P, is 200 N/C. A point charge of +1 C is placed at point P. What is the magnitude of the electric force experienced by this charge?
7. Can a current be induced in a wire if the flux through the wire is zero? Explain.
8. True or false: In a uniform electric field pointing to the right, a negatively charged particle will move to the left. If true, justify with an equation; if false, explain the flaw in reasoning.
9. Which is a vector and which is a scalar: electric field and electric potential?
10. Fill in the blank with either "parallel" or "series":
1. a. Voltage across resistors in _____ must be the same for each.
2. b. Current through resistors in _____ must be the same for each.
3. c. Voltage across capacitors in _____ must be the same for each.
4. d. Charge stored on capacitors in _____ must be the same for each.
11. A uniform electric field acts to the right. In which direction will each of these particles accelerate?
1. a. proton
2. b. positron (same mass as electron, but opposite charge)
3. c. neutron
4. d. anti-proton (same mass as proton, but opposite charge)
12. A uniform magnetic field acts to the right. In which direction will each of these particles accelerate, assuming they enter the field moving toward the top of the page?
1. a. proton
2. b. positron (same mass as electron, but opposite charge)
3. c. neutron
4. d. anti-proton (same mass as proton, but opposite charge)
13. How do you find the potential energy of an electric charge?

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