# User:Guy vandegrift/Quizbank/Archive1/College Physics/II T2study

## TrigPhysT2_151021_Study[edit]

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- This document contains either a study guide OR pairs of exams taken from the same exam bank
- If two exams have the same s-number, then v1 and v2 have the same questions, presented in different (random) order.
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- At the end of this document
**Attribution**for the quizzes identifies where the questions were obtained**Study guide**links reading materials and/or relevant equations.

### TrigPhysT2_151021_Study-v1s1[edit]

1. What is the magnitude of the electric field at the origin if a 1.7 nC charge is placed at x = 6.4 m, and a 3 nC charge is placed at y = 8 m?

- ___a) 4.22 x 10
^{-1}N/C

- ___b) 4.87 x 10
^{-1}N/C

- ___c) 5.63 x 10
^{-1}N/C

- ___d) 6.5 x 10
^{-1}N/C

- ___e) 7.51 x 10
^{-1}N/C

2. What angle does the electric field at the origin make with the x-axis if a 2.8 nC charge is placed at x = -8 m, and a 1.5 nC charge is placed at y = -8.7 m?

- ___a) 2.44 x 10
^{1}degrees

- ___b) 2.81 x 10
^{1}degrees

- ___c) 3.25 x 10
^{1}degrees

- ___d) 3.75 x 10
^{1}degrees

- ___e) 4.33 x 10
^{1}degrees

3. A dipole at the origin consists of charge Q placed at x = 0.5a, and charge of -Q placed at x = -0.5a. The absolute value of the x component of the electric field at (x,y) =( 5a, 5a) is βkQ/a^{2}, where β equals

- ___a) 6.46 x 10
^{-4}unit

- ___b) 7.82 x 10
^{-4}unit

- ___c) 9.48 x 10
^{-4}unit

- ___d) 1.15 x 10
^{-3}unit

- ___e) 1.39 x 10
^{-3}unit

4. A dipole at the origin consists of charge Q placed at x = 0.5a, and charge of -Q placed at x = -0.5a. The absolute value of the y component of the electric field at (x,y) =( 1.1a, 1.2a) is βkQ/a^{2}, where β equals

- ___a) 1.95 x 10
^{-1}unit

- ___b) 2.36 x 10
^{-1}unit

- ___c) 2.86 x 10
^{-1}unit

- ___d) 3.47 x 10
^{-1}unit

- ___e) 4.2 x 10
^{-1}unit

5. How fast is a 2672 eV electron moving?

- ___a) 6.1 x 10
^{6}m/s.

- ___b) 9.1 x 10
^{6}m/s.

- ___c) 1.4 x 10
^{7}m/s.

- ___d) 2 x 10
^{7}m/s.

- ___e) 3.1 x 10
^{7}m/s.

6. A proton is accellerated (at rest) from a plate held at 588.2 volts to a plate at zero volts. What is the final speed?

- ___a) 6.6 x 10
^{4}m/s.

- ___b) 10 x 10
^{4}m/s.

- ___c) 1.5 x 10
^{5}m/s.

- ___d) 2.2 x 10
^{5}m/s.

- ___e) 3.4 x 10
^{5}m/s.

7. What voltage is required accelerate an electron at rest to a speed of 1.5 x 10^{3} m/s?

- ___a) 1.9 x 10
^{-6}volts

- ___b) 2.8 x 10
^{-6}volts

- ___c) 4.3 x 10
^{-6}volts

- ___d) 6.4 x 10
^{-6}volts

- ___e) 9.6 x 10
^{-6}volts

8. What voltage is required to stop a proton moving at a speed of 8 x 10^{7} m/s?

- ___a) 3.3 x 10
^{7}volts

- ___b) 5 x 10
^{7}volts

- ___c) 7.5 x 10
^{7}volts

- ___d) 1.1 x 10
^{8}volts

- ___e) 1.7 x 10
^{8}volts

9. A parallel plate capacitor has both plates with an area of 0.55 m^{2}. The separation between the plates is 0.53mm. Applied to the plates is a potential difference of 4.25 kV. What is the capacitance?

- ___a) 6.95 nF.

- ___b) 7.99 nF.

- ___c) 9.19 nF.

- ___d) 10.57 nF.

- ___e) 12.15 nF.

10. The same parallel plate capacitor, with area 1.05 m^{2}, plate separation 0.63mm, and an applied voltage of 4.35 kV. How much charge is stored?

- ___a) 42.21 μC.

- ___b) 48.54 μC.

- ___c) 55.82 μC.

- ___d) 64.19 μC.

- ___e) 73.82 μC.

11. A 0.5 Farad capacitor is charged with 1.6 Coulombs. What is the value of the electric field if the plates are 0.7 mm apart?

- ___a) 3.46 kV/m.

- ___b) 3.98 kV/m.

- ___c) 4.57 kV/m.

- ___d) 5.26 kV/m.

- ___e) 6.05 kV/m.

12. A 1.4 Farad capacitor charged with 2.3 Coulombs. What is the energy stored in the capacitor if the plates are 0.6 mm apart?

- ___a) 1.08 J.

- ___b) 1.24 J.

- ___c) 1.43 J.

- ___d) 1.64 J.

- ___e) 1.89 J.

13. A 0.5 Farad capacitor charged with 1.6 Coulombs. What is the force between the plates if they are 0.7 mm apart?

- ___a) 3180 N.

- ___b) 3657 N.

- ___c) 4206 N.

- ___d) 4837 N.

- ___e) 5562 N.

14. A 5.1 volt battery moves 43 Coulombs of charge in 1.5 hours. What is the power?

- ___a) 4.06 x 10
^{-2}W

- ___b) 4.92 x 10
^{-2}W

- ___c) 5.96 x 10
^{-2}W

- ___d) 7.22 x 10
^{-2}W

- ___e) 8.75 x 10
^{-2}W

15. The diameter of a copper wire is 3.6 mm, and it carries a current of 52 amps. What is the drift velocity if copper has a density of 8.8E3 kg/m^{3} and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)

- ___a) 3.82 x 10
^{-4}m/s

- ___b) 4.63 x 10
^{-4}m/s

- ___c) 5.61 x 10
^{-4}m/s

- ___d) 6.8 x 10
^{-4}m/s

- ___e) 8.24 x 10
^{-4}m/s

16. A 146 Watt DC motor draws 0.23 amps of current. What is effective resistance?

- ___a) 2.28 x 10
^{3}Ω

- ___b) 2.76 x 10
^{3}Ω

- ___c) 3.34 x 10
^{3}Ω

- ___d) 4.05 x 10
^{3}Ω

- ___e) 4.91 x 10
^{3}Ω

17. A power supply delivers 169 watts of power to a 219 ohm resistor. What was the applied voltage?

- ___a) 8.93 x 10
^{1}volts

- ___b) 1.08 x 10
^{2}volts

- ___c) 1.31 x 10
^{2}volts

- ___d) 1.59 x 10
^{2}volts

- ___e) 1.92 x 10
^{2}volts

18. An ideal 7.9 V voltage source is connected to two resistors in parallel. One is 2.4, and the other is 5.2 . What is the current through the larger resistor?

- ___a) 0.68 mA.

- ___b) 0.79 mA.

- ___c) 0.9 mA.

- ___d) 1.04 mA.

- ___e) 1.2 mA.

19. A 6.6 ohm resistor is connected in series to a pair of 6.4 ohm resistors that are in parallel. What is the net resistance?

- ___a) 6.4 ohms.

- ___b) 7.4 ohms.

- ___c) 8.5 ohms.

- ___d) 9.8 ohms.

- ___e) 11.3 ohms.

20. Two 6.4 ohm resistors are connected in parallel. This combination is then connected in series to a 6.6 ohm resistor. What is the net resistance?

- ___a) 8.5 ohms.

- ___b) 9.8 ohms.

- ___c) 11.3 ohms.

- ___d) 13 ohms.

- ___e) 14.9 ohms.

21. An ideal 7.5 volt battery is connected to a 0.084 ohm resistor. To measure the current an ammeter with a resistance of 14 is used. What current does the ammeter actually read?

- ___a) 43.8 A.

- ___b) 50.3 A.

- ___c) 57.9 A.

- ___d) 66.5 A.

- ___e) 76.5 A.

22. A battery has an emf of 5.3 volts, and an internal resistance of 428 . It is connected to a 2.3 resistor. What power is developed in the 2.3 resistor?

- ___a) 4.96 W.

- ___b) 5.71 W.

- ___c) 6.56 W.

- ___d) 7.55 W.

- ___e) 8.68 W.

#### Key to TrigPhysT2_151021_Study-v1s1[edit]

1. What is the magnitude of the electric field at the origin if a 1.7 nC charge is placed at x = 6.4 m, and a 3 nC charge is placed at y = 8 m?

- -a) 4.22 x 10
^{-1}N/C

- -a) 4.22 x 10

- -b) 4.87 x 10
^{-1}N/C

- -b) 4.87 x 10

- +c) 5.63 x 10
^{-1}N/C

- +c) 5.63 x 10

- -d) 6.5 x 10
^{-1}N/C

- -d) 6.5 x 10

- -e) 7.51 x 10
^{-1}N/C

- -e) 7.51 x 10

2. What angle does the electric field at the origin make with the x-axis if a 2.8 nC charge is placed at x = -8 m, and a 1.5 nC charge is placed at y = -8.7 m?

- +a) 2.44 x 10
^{1}degrees

- +a) 2.44 x 10

- -b) 2.81 x 10
^{1}degrees

- -b) 2.81 x 10

- -c) 3.25 x 10
^{1}degrees

- -c) 3.25 x 10

- -d) 3.75 x 10
^{1}degrees

- -d) 3.75 x 10

- -e) 4.33 x 10
^{1}degrees

- -e) 4.33 x 10

3. A dipole at the origin consists of charge Q placed at x = 0.5a, and charge of -Q placed at x = -0.5a. The absolute value of the x component of the electric field at (x,y) =( 5a, 5a) is βkQ/a^{2}, where β equals

- -a) 6.46 x 10
^{-4}unit

- -a) 6.46 x 10

- -b) 7.82 x 10
^{-4}unit

- -b) 7.82 x 10

- -c) 9.48 x 10
^{-4}unit

- -c) 9.48 x 10

- -d) 1.15 x 10
^{-3}unit

- -d) 1.15 x 10

- +e) 1.39 x 10
^{-3}unit

- +e) 1.39 x 10

4. A dipole at the origin consists of charge Q placed at x = 0.5a, and charge of -Q placed at x = -0.5a. The absolute value of the y component of the electric field at (x,y) =( 1.1a, 1.2a) is βkQ/a^{2}, where β equals

- -a) 1.95 x 10
^{-1}unit

- -a) 1.95 x 10

- -b) 2.36 x 10
^{-1}unit

- -b) 2.36 x 10

- -c) 2.86 x 10
^{-1}unit

- -c) 2.86 x 10

- +d) 3.47 x 10
^{-1}unit

- +d) 3.47 x 10

- -e) 4.2 x 10
^{-1}unit

- -e) 4.2 x 10

5. How fast is a 2672 eV electron moving?

- -a) 6.1 x 10
^{6}m/s.

- -a) 6.1 x 10

- -b) 9.1 x 10
^{6}m/s.

- -b) 9.1 x 10

- -c) 1.4 x 10
^{7}m/s.

- -c) 1.4 x 10

- -d) 2 x 10
^{7}m/s.

- -d) 2 x 10

- +e) 3.1 x 10
^{7}m/s.

- +e) 3.1 x 10

6. A proton is accellerated (at rest) from a plate held at 588.2 volts to a plate at zero volts. What is the final speed?

- -a) 6.6 x 10
^{4}m/s.

- -a) 6.6 x 10

- -b) 10 x 10
^{4}m/s.

- -b) 10 x 10

- -c) 1.5 x 10
^{5}m/s.

- -c) 1.5 x 10

- -d) 2.2 x 10
^{5}m/s.

- -d) 2.2 x 10

- +e) 3.4 x 10
^{5}m/s.

- +e) 3.4 x 10

7. What voltage is required accelerate an electron at rest to a speed of 1.5 x 10^{3} m/s?

- -a) 1.9 x 10
^{-6}volts

- -a) 1.9 x 10

- -b) 2.8 x 10
^{-6}volts

- -b) 2.8 x 10

- -c) 4.3 x 10
^{-6}volts

- -c) 4.3 x 10

- +d) 6.4 x 10
^{-6}volts

- +d) 6.4 x 10

- -e) 9.6 x 10
^{-6}volts

- -e) 9.6 x 10

8. What voltage is required to stop a proton moving at a speed of 8 x 10^{7} m/s?

- +a) 3.3 x 10
^{7}volts

- +a) 3.3 x 10

- -b) 5 x 10
^{7}volts

- -b) 5 x 10

- -c) 7.5 x 10
^{7}volts

- -c) 7.5 x 10

- -d) 1.1 x 10
^{8}volts

- -d) 1.1 x 10

- -e) 1.7 x 10
^{8}volts

- -e) 1.7 x 10

9. A parallel plate capacitor has both plates with an area of 0.55 m^{2}. The separation between the plates is 0.53mm. Applied to the plates is a potential difference of 4.25 kV. What is the capacitance?

- -a) 6.95 nF.

- -b) 7.99 nF.

- +c) 9.19 nF.

- -d) 10.57 nF.

- -e) 12.15 nF.

10. The same parallel plate capacitor, with area 1.05 m^{2}, plate separation 0.63mm, and an applied voltage of 4.35 kV. How much charge is stored?

- -a) 42.21 μC.

- -b) 48.54 μC.

- -c) 55.82 μC.

- +d) 64.19 μC.

- -e) 73.82 μC.

11. A 0.5 Farad capacitor is charged with 1.6 Coulombs. What is the value of the electric field if the plates are 0.7 mm apart?

- -a) 3.46 kV/m.

- -b) 3.98 kV/m.

- +c) 4.57 kV/m.

- -d) 5.26 kV/m.

- -e) 6.05 kV/m.

12. A 1.4 Farad capacitor charged with 2.3 Coulombs. What is the energy stored in the capacitor if the plates are 0.6 mm apart?

- -a) 1.08 J.

- -b) 1.24 J.

- -c) 1.43 J.

- -d) 1.64 J.

- +e) 1.89 J.

13. A 0.5 Farad capacitor charged with 1.6 Coulombs. What is the force between the plates if they are 0.7 mm apart?

- -a) 3180 N.

- +b) 3657 N.

- -c) 4206 N.

- -d) 4837 N.

- -e) 5562 N.

14. A 5.1 volt battery moves 43 Coulombs of charge in 1.5 hours. What is the power?

- +a) 4.06 x 10
^{-2}W

- +a) 4.06 x 10

- -b) 4.92 x 10
^{-2}W

- -b) 4.92 x 10

- -c) 5.96 x 10
^{-2}W

- -c) 5.96 x 10

- -d) 7.22 x 10
^{-2}W

- -d) 7.22 x 10

- -e) 8.75 x 10
^{-2}W

- -e) 8.75 x 10

15. The diameter of a copper wire is 3.6 mm, and it carries a current of 52 amps. What is the drift velocity if copper has a density of 8.8E3 kg/m^{3} and an atomic mass of 63.54 g/mol? (1 mol = 6.02E23 atoms, and copper has one free electron per atom.)

- +a) 3.82 x 10
^{-4}m/s

- +a) 3.82 x 10

- -b) 4.63 x 10
^{-4}m/s

- -b) 4.63 x 10

- -c) 5.61 x 10
^{-4}m/s

- -c) 5.61 x 10

- -d) 6.8 x 10
^{-4}m/s

- -d) 6.8 x 10

- -e) 8.24 x 10
^{-4}m/s

- -e) 8.24 x 10

16. A 146 Watt DC motor draws 0.23 amps of current. What is effective resistance?

- -a) 2.28 x 10
^{3}Ω

- -a) 2.28 x 10

- +b) 2.76 x 10
^{3}Ω

- +b) 2.76 x 10

- -c) 3.34 x 10
^{3}Ω

- -c) 3.34 x 10

- -d) 4.05 x 10
^{3}Ω

- -d) 4.05 x 10

- -e) 4.91 x 10
^{3}Ω

- -e) 4.91 x 10

17. A power supply delivers 169 watts of power to a 219 ohm resistor. What was the applied voltage?

- -a) 8.93 x 10
^{1}volts

- -a) 8.93 x 10

- -b) 1.08 x 10
^{2}volts

- -b) 1.08 x 10

- -c) 1.31 x 10
^{2}volts

- -c) 1.31 x 10

- -d) 1.59 x 10
^{2}volts

- -d) 1.59 x 10

- +e) 1.92 x 10
^{2}volts

- +e) 1.92 x 10

18. An ideal 7.9 V voltage source is connected to two resistors in parallel. One is 2.4, and the other is 5.2 . What is the current through the larger resistor?

- -a) 0.68 mA.

- -b) 0.79 mA.

- -c) 0.9 mA.

- +d) 1.04 mA.

- -e) 1.2 mA.

19. A 6.6 ohm resistor is connected in series to a pair of 6.4 ohm resistors that are in parallel. What is the net resistance?

- -a) 6.4 ohms.

- -b) 7.4 ohms.

- -c) 8.5 ohms.

- +d) 9.8 ohms.

- -e) 11.3 ohms.

20. Two 6.4 ohm resistors are connected in parallel. This combination is then connected in series to a 6.6 ohm resistor. What is the net resistance?

- -a) 8.5 ohms.

- +b) 9.8 ohms.

- -c) 11.3 ohms.

- -d) 13 ohms.

- -e) 14.9 ohms.

21. An ideal 7.5 volt battery is connected to a 0.084 ohm resistor. To measure the current an ammeter with a resistance of 14 is used. What current does the ammeter actually read?

- -a) 43.8 A.

- -b) 50.3 A.

- -c) 57.9 A.

- -d) 66.5 A.

- +e) 76.5 A.

22. A battery has an emf of 5.3 volts, and an internal resistance of 428 . It is connected to a 2.3 resistor. What power is developed in the 2.3 resistor?

- -a) 4.96 W.

- -b) 5.71 W.

- -c) 6.56 W.

- -d) 7.55 W.

- +e) 8.68 W.

- Attribution (for quiz questions) under CC-by-SA license

- http://en.wikiversity.org/w/index.php?title=Physics_equations/18-Electric_charge_and_field/Q:findE&oldid=1378605
- http://en.wikiversity.org/w/index.php?title=Physics_equations/20-_Electric_Current,_Resistance,_and_Ohm%27s_Law/Q:PowerDriftVelocity&oldid=1391116
- http://en.wikiversity.org/w/index.php?title=Physics_equations/21-Circuits,_Bioelectricity,_and_DC_Instruments/Q:circuits&oldid=1391123
- Study guide

- http://en.wikiversity.org/wiki/Physics_equations/Sheet/All_chapters