Unit 2: Electric Force, Field, and Potential
Physics 2 · Unit 2 · Paper 2

Electric Force, Field, and Potential 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 20 terms and is the same for everyone, so a teacher can assign “Unit 2, Paper 2” 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

Electric potential

2

Uniform field between parallel plates

3

Why potential is a scalar

4

Equipotential lines

5

Conductors vs insulators

6

Field vs potential

7

Electric potential energy

8

Electroscope behavior

9

Potential difference and work

10

Field inside a conductor

11

Charge conservation and quantization

12

Superposition of fields

Short answer 1. Define or explain: Field of a point charge

3 pts

Short answer 2. Define or explain: Electric field

3 pts

Short answer 3. Define or explain: Field line rules

3 pts

Short answer 4. Define or explain: Charging by friction, conduction and induction

3 pts

Free response

4 pts

This course has no free-response prompt tagged to this unit, so one from elsewhere in the course is used. It is still worth writing — the skill transfers.

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.