This exam consists of 31 questions; true-false questions are worth 2 points each, three-choice multiple choice questions are worth 3 points each, five-choice multiple choice questions are worth 6 points each. The maximum possible score is 131. When the exam was given, the minimum "A" score was 113; the minimum "B" was 99; the minimum "C" was 83; the minimum "D" was 65. The mean was 97.9; the median was 98. Click here to see the formula sheet that came with the exam.

(a) toward the conductor (b) away from the conductor (c) zero

(a) vertically upward (b) vertically downward (c) horizontal to the right (d) horizontal to the left (e) it does not move

(a) W_{ef} < W_{gf} (b) W_{ef} = W_{gf} (c) W_{ef} > W_{gf}

(a) toward A (b) toward B (c) toward C (d) toward D (e) E = 0

(a) I_{B} = 0 (b) I_{B} = V/(2R) (c) I_{B} = V/R

(a) Q_{1} < Q_{2} (b) Q_{1} = Q_{2} (c) Q_{1} > Q_{2}

(a) It decreases. (b) It stays the same. (c) It increases.

(a) B_{1} < B_{2} (b) B_{1} = B_{2} (c) B_{1} > B_{2}

The three charges indicated in the figure are fixed at the locations shown.

Calculate the electric potential at the origin assuming the potential is defined to be zero at infinity?

(a) V = -18000 V (b) V = -9000 V (c) V = 0 (d) V = +6000 V (e) V = +24000 V

(a) W = -18.4 x 10^{-2} J (b) W = -4.2 x 10^{-2} J (c) W = 0 (d) W = +3.6 x 10^{-2} J (e) W = +12.8 x 10^{-2} J

(a) to the left (b) to the right (c) it would remain at rest

All charges have magnitudes as indicated and are fixed to the positions shown on the grid.

In which direction is the force on charge q_{3} due to charges q_{1} and q_{2} pointing?

(a) to the left (b) to the right (c) down

(a) F = 1.06 x 10^{-3} N (b) F = 2.31 x 10^{-3} N (c) F = 4.56 x 10^{-3} N (d) F = 11.3 x 10^{-3} N (e) F = 18.6 x 10^{-3} N

(a) R = 17.5 W (b) R = 20 W (c) R = 28.2 W (d) R = 30 W (e) R = 48.8 W

What is V_{TR}, the electric potential difference between point T and point R?

(a) V_{TR} = 0 Volts (b) V_{TR} = 40 Volts (c) V_{TR} = 50 Volts (d) V_{TR} = 60 Volts (e) V_{TR} = 100 Volts

(a) V_{PR} = 0 Volts (b) V_{PR} = 40 Volts (c) V_{PR} = 50 Volts (d) V_{PR} = 60 Volts (e) V_{PR} = 100 Volts

(a) I_{PQ} > 0 (Down) (b) I_{PQ} = 0 (c) I_{PQ} < 0 (Up)

(a) I_{B} = 0 A (b) I_{B} = 1.67 A (c) I_{B} = 2.08 A (d) I_{B} = 2.50 A (e) I_{B} = 4.17 A

Consider the circuit shown to the right.

Which of the following is a valid Kirchhoff voltage equation for the dotted outside loop?

(a) E_{1} + I_{1}R_{1} - E_{2} + I_{3}R_{3} = 0 (b) -E_{1} + I_{1}R_{1} + E_{2} - I_{3}R_{3} = 0 (c) E_{1} - I_{1}R_{1} - E_{2} - I_{3}R_{3} = 0

(a) I_{1}+I_{2}+I_{3} = 0 (b) I_{1}-I_{2}-I_{3} = 0 (c) I_{1}-I_{2}+I_{3} = 0

Calculate V_{AB} = V_{A}- V_{B}, the potential difference between point A and point B?

(a) V_{AB} = -20 Volts (b) V_{AB} = -10 Volts (c) V_{AB} = 0 Volts (d) V_{AB} = +10 Volts (e) V_{AB} = +20 Volts

A battery of emf 16 volts is connected to a parallel plate capacitor. The points marked a and b are specific locations on the conducting wire of the circuit. The dotted surface marked c is located exactly halfway between the plates of the capacitor.

What is the direction of the electric field between the plates of the capacitor?

(a) upward (b) downward

(a) 16 V (b) 8 V (c) 0 V

In the circuit shown below, the battery emf is 12 volts, the resistors R_{1} = 3 W, R_{2} = 3W, and the capacitor C = 6 mF. The capacitor is initially uncharged. The circuit is connected as shown below, then switch S_{1} is closed, while S_{2} is left open.

Immediately after switch S_{1} is closed, what is the current in resistor R_{1}?

(a) I_{1} = 0 A (b) I_{1} = 2 A (c) I_{1} = 4 A

(a) I_{2} = 0 A (b) I_{2} = 2 A (c) I_{2} = 4 A

After switch S_{2} is closed, what happens to the charge on capacitor C?

(a) The capacitor discharges through resistor R_{1}. (b) The capacitor discharges through resistor R_{2}. (c) The capacitor discharges through resistors R_{1} and R_{2}.

(a) (b) (c)

Three capacitors are connected to an emf as shown in the diagram. The value of the emf is 12 volts, while C_{1} = 7 mF, C_{2} = 9 mF, and C_{3} = 5 mF.

What is Q_{1}, the charge on the capacitor C_{1}?

(a) Q_{1} = 6.0 x 10^{-5} C (b) Q_{1} = 8.4 x 10^{-5} C (c) Q_{1} = 10.8 x 10^{-5} C (d) Q_{1} = 14.4 x 10^{-5} C (e) Q_{1} = 16.8 x 10^{-5} C

(a) V_{3} = 4.3 V (b) V_{3} = 5.0 V (c) V_{3} = 6.2 V (d) V_{3} = 7.0 V (e) V_{3} = 7.7 V

(a) U_{total} = 2.31 x 10^{-4} J (b) U_{total} = 3.87 x 10^{-4} J (c) U_{total} = 5.04 x 10^{-4} J (d) U_{total} = 7.35 x 10^{-4} J (e) U_{total} = 9.81 x 10^{-4} J