1. Chapter 16

2. The positive charge is the end view of a positively charged glass rod
The positive charge is the end view of a positively charged glass rod. A negatively charged particle moves in a circular arc around the glass rod. Is the work done on the charged particle by the rod’s electric field positive, negative or zero?
Positive
Negative
Zero
STT29.1

3. The positive charge is the end view of a positively charged glass rod
The positive charge is the end view of a positively charged glass rod. A negatively charged particle moves in a circular arc around the glass rod. Is the work done on the charged particle by the rod’s electric field positive, negative or zero?
Positive
Negative
Zero
STT29.1

4. Each + symbol represents the same amount of charge.
Rank in order, from largest to smallest, the potential energies Ua to Ud of these four pairs of charges.
Each + symbol represents the same amount of charge.
Ua = Ub > Uc = Ud
Ua = Uc > Ub = Ud
Ub = Ud > Ua = Uc
Ud > Ub = Uc > Ua
Ud > Uc > Ub > Ua
STT29.2

5. Each + symbol represents the same amount of charge.
Rank in order, from largest to smallest, the potential energies Ua to Ud of these four pairs of charges.
Each + symbol represents the same amount of charge.
Ua = Ub > Uc = Ud
Ua = Uc > Ub = Ud
Ub = Ud > Ua = Uc
Ud > Ub = Uc > Ua
Ud > Uc > Ub > Ua
STT29.2

6. moves toward A with an increasing speed.
A proton is released from rest at point B, where the potential is 0 V. Afterward, the proton
moves toward A with an increasing speed.
moves toward A with a steady speed.
remains at rest at B.
moves toward C with a steady speed.
moves toward C with an increasing speed.
STT29.3

7. moves toward A with an increasing speed.
A proton is released from rest at point B, where the potential is 0 V. Afterward, the proton
moves toward A with an increasing speed.
moves toward A with a steady speed.
remains at rest at B.
moves toward C with a steady speed.
moves toward C with an increasing speed.
STT29.3

8. Va = Vb > Vc > Vd = Ve Vd = Ve > Vc > Va = Vb
Rank in order, from largest to smallest, the potentials Va to Ve at the points a to e.
STT29.4
Va = Vb = Vc = Vd = Ve
Va = Vb > Vc > Vd = Ve
Vd = Ve > Vc > Va = Vb
Vb = Vc = Ve > Va = Vd
Va = Vb = Vd = Ve > Vc

9. Va = Vb > Vc > Vd = Ve Vd = Ve > Vc > Va = Vb
Rank in order, from largest to smallest, the potentials Va to Ve at the points a to e.
STT29.4
Va = Vb = Vc = Vd = Ve
Va = Vb > Vc > Vd = Ve
Vd = Ve > Vc > Va = Vb
Vb = Vc = Ve > Va = Vd
Va = Vb = Vd = Ve > Vc

10. Rank in order, from largest to smallest, the potential differences ∆V12, ∆V13, and ∆V23 between points 1 and 2, points 1 and 3, and points 2 and 3.
STT29.5
∆V12 > ∆V13 = ∆V23
∆V13 > ∆V12 > ∆V23
∆V13 > ∆V23 > ∆V12
∆V13 = ∆V23 > ∆V12
∆V23 > ∆V12 > ∆V13

11. Rank in order, from largest to smallest, the potential differences ∆V12, ∆V13, and ∆V23 between points 1 and 2, points 1 and 3, and points 2 and 3.
STT29.5
∆V12 > ∆V13 = ∆V23
∆V13 > ∆V12 > ∆V23
∆V13 > ∆V23 > ∆V12
∆V13 = ∆V23 > ∆V12
∆V23 > ∆V12 > ∆V13

12. Which potential-energy graph describes this electric field?
STT30.1

13. Which potential-energy graph describes this electric field?
STT30.1

14. Which set of equipotential surfaces matches this electric field?
STT30.2

15. Which set of equipotential surfaces matches this electric field?
STT30.2

16. V1 > V2 > V3 and E1 > E2 > E3
Three charged, metal spheres of different radii are connected by a thin metal wire. The potential and electric field at the surface of each sphere are V and E. Which of the following is true?
V1 = V2 = V3 and E1 = E2 = E3
V1 = V2 = V3 and E1 > E2 > E3
V1 > V2 > V3 and E1 = E2 = E3
V1 > V2 > V3 and E1 > E2 > E3
V3 > V2 > V1 and E1 = E2 = E3
STT30.3

17. V1 > V2 > V3 and E1 > E2 > E3
Three charged, metal spheres of different radii are connected by a thin metal wire. The potential and electric field at the surface of each sphere are V and E. Which of the following is true?
V1 = V2 = V3 and E1 = E2 = E3
V1 = V2 = V3 and E1 > E2 > E3
V1 > V2 > V3 and E1 = E2 = E3
V1 > V2 > V3 and E1 > E2 > E3
V3 > V2 > V1 and E1 = E2 = E3
STT30.3

18. A wire connects the positive and negative terminals of a battery
A wire connects the positive and negative terminals of a battery. Two identical wires connect the positive and negative terminals of an identical battery. Rank in order, from largest to smallest, the currents Ia to Id at points a to d.
Ia = Ib = Ic = Id
Ia = Ib > Ic = Id
Ic = Id > Ia = Ib
Ic = Id > Ia > Ib
Ia > Ib > Ic = Id
STT30.4

19. A wire connects the positive and negative terminals of a battery
A wire connects the positive and negative terminals of a battery. Two identical wires connect the positive and negative terminals of an identical battery. Rank in order, from largest to smallest, the currents Ia to Id at points a to d.
Ia = Ib = Ic = Id
Ia = Ib > Ic = Id
Ic = Id > Ia = Ib
Ic = Id > Ia > Ib
Ia > Ib > Ic = Id
STT30.4

20. (Ceq)a > (Ceq)b = (Ceq)c > (Ceq)d
Rank in order, from largest to smallest, the equivalent capacitance (Ceq)a to (Ceq)d of circuits a to d.
(Ceq)a > (Ceq)b = (Ceq)c > (Ceq)d
(Ceq)b > (Ceq)a = (Ceq)d > (Ceq)c
(Ceq)c > (Ceq)a = (Ceq)d > (Ceq)b
(Ceq)d > (Ceq)b = (Ceq)c > (Ceq)a
(Ceq)d > (Ceq)b > (Ceq)a > (Ceq)c
STT30.5

21. (Ceq)a > (Ceq)b = (Ceq)c > (Ceq)d
Rank in order, from largest to smallest, the equivalent capacitance (Ceq)a to (Ceq)d of circuits a to d.
(Ceq)a > (Ceq)b = (Ceq)c > (Ceq)d
(Ceq)b > (Ceq)a = (Ceq)d > (Ceq)c
(Ceq)c > (Ceq)a = (Ceq)d > (Ceq)b
(Ceq)d > (Ceq)b = (Ceq)c > (Ceq)a
(Ceq)d > (Ceq)b > (Ceq)a > (Ceq)c
STT30.5

22. What are the units of potential difference?
Amperes
Potentiometers
Farads
Volts
Henrys
IG29.1

23. What are the units of potential difference?
Amperes
Potentiometers
Farads
Volts
Henrys
IG29.1

24. What is the SI unit of capacitance?
Capaciton
Faraday
Hertz
Henry
Exciton
IG30.2

25. What is the SI unit of capacitance?
Capaciton
Faraday
Hertz
Henry
Exciton
IG30.2

26. The electric potential inside a 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.
IG29.4

27. The electric potential inside a 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.
IG29.4

28. is always perpendicular to an equipotential surface.
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.
IG30.3

29. is always perpendicular to an equipotential surface.
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.
IG30.3