1. Chapter 21 Reading Quiz
Dr. Harold Williams

2. Reading Quiz The units of potential difference are J J/C V/m N/C
Answer: B
Slide 21-6

3. Answer The units of potential difference are J J/C V/m N/C Slide 21-7
Answer: B
Slide 21-7

4. Reading Quiz
New units of the electric field were introduced in this chapter. They are:
V/C
N/C
V/m
J/C
Ω/m
Answer: C
Slide 21-8

5. Answer
New units of the electric field were introduced in this chapter. They are:
V/C
N/C
V/m
J/C
Ω/m
Answer: C
Slide 21-9

6. Reading Quiz The electric potential inside a parallel-plate capacitor
is constant.
increases linearly from the negative to the positive plate.
decreases linearly from the negative to the positive plate.
decreases inversely with distance from the negative plate.
decreases inversely with the square of the distance from the negative plate.
Answer: B
Slide 21-10

7. Answer The electric potential inside a parallel-plate capacitor
is constant.
increases linearly from the negative to the positive plate.
decreases linearly from the negative to the positive plate.
decreases inversely with distance from the negative plate.
decreases inversely with the square of the distance from the negative plate.
Answer: B
Slide 21-11

8. Reading Quiz The electric field
is always perpendicular to an equipotential surface.
is always tangent to an equipotential surface.
always bisects an equipotential surface.
makes an angle to an equipotential surface that depends on the amount of charge.
Answer: A
Slide 21-12

9. Answer The electric field
is always perpendicular to an equipotential surface.
is always tangent to an equipotential surface.
always bisects an equipotential surface.
makes an angle to an equipotential surface that depends on the amount of charge.
Answer: A
Slide 21-13