Unit 4: Magnetism and Electromagnetic Induction
Physics 2 · Unit 4 · Paper 3

Magnetism and Electromagnetic Induction unit test

A test on this unit alone, marked as a percentage and a letter grade — for the test your class is actually sitting, rather than for May. Answer everything, then submit once: seeing the answer to question 3 before attempting question 4 makes the final percentage meaningless.

Paper 1Paper 2Paper 3
Each paper is built from this unit’s 22 terms and is the same for everyone, so a teacher can assign “Unit 4, Paper 3” and every student sits the identical test. Multiple choice is marked objectively; the written sections you mark yourself against the model answer and rubric.
Suggested time 31 min 28 points0/17 attempted
1

Why magnetic monopoles do not appear

2

Motional EMF

3

Domains and ferromagnetism

4

Faraday's law

5

Transformers

6

Transformer energy conservation

7

Flux through a rotating loop

8

Motor principle

9

Generator principle

10

Determining the field direction around a wire

11

Right-hand rule for force

12

Why power is transmitted at high voltage

Short answer 1. Define or explain: Magnetic field of a wire

3 pts

Short answer 2. Define or explain: Eddy currents

3 pts

Short answer 3. Define or explain: Two parallel wires

3 pts

Short answer 4. Define or explain: Magnetic force does no work

3 pts

Free response

4 pts

A long straight wire carries a steady current I to the right. A rectangular conducting loop is placed below the wire and is pulled downward at a constant velocity v.

Determine the direction of the induced current in the loop. Justify your answer using Lenz's Law.

As the loop moves further away, what happens to the magnitude of the induced current? Explain.