Quizbank/College Physics/II T2study

TrigPhysT2_151021_Study

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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.; Exams with different s-numbers have different questions and may not have the same difficulty.; Click items in the table of contents and appropriate page should be reached. This feature should allow you to print only those pages that you need.

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

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^-1N/C

___b) 4.87 x 10^-1N/C

___c) 5.63 x 10^-1N/C

___d) 6.5 x 10^-1N/C

___e) 7.51 x 10^-1N/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 10¹degrees

___b) 2.81 x 10¹degrees

___c) 3.25 x 10¹degrees

___d) 3.75 x 10¹degrees

___e) 4.33 x 10¹degrees

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/a², 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/a², 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 10⁶ m/s.

___b) 9.1 x 10⁶ m/s.

___c) 1.4 x 10⁷ m/s.

___d) 2 x 10⁷ m/s.

___e) 3.1 x 10⁷ 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 10⁴ m/s.

___b) 10 x 10⁴ m/s.

___c) 1.5 x 10⁵ m/s.

___d) 2.2 x 10⁵ m/s.

___e) 3.4 x 10⁵ m/s.

7. What voltage is required accelerate an electron at rest to a speed of 1.5 x 10³ 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 10⁷ m/s?

___a) 3.3 x 10⁷ volts

___b) 5 x 10⁷ volts

___c) 7.5 x 10⁷ volts

___d) 1.1 x 10⁸ volts

___e) 1.7 x 10⁸ volts

9. A parallel plate capacitor has both plates with an area of 0.55 m². 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 m², 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/m³ 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^-4m/s

___b) 4.63 x 10^-4m/s

___c) 5.61 x 10^-4m/s

___d) 6.8 x 10^-4m/s

___e) 8.24 x 10^-4m/s

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

___a) 2.28 x 10³ Ω

___b) 2.76 x 10³ Ω

___c) 3.34 x 10³ Ω

___d) 4.05 x 10³ Ω

___e) 4.91 x 10³ Ω

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

___a) 8.93 x 10¹ volts

___b) 1.08 x 10² volts

___c) 1.31 x 10² volts

___d) 1.59 x 10² volts

___e) 1.92 x 10² volts

18. An ideal 7.9 V voltage source is connected to two resistors in parallel. One is 2.4 $k\Omega$ , and the other is 5.2 $k\Omega$ . 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 $m\Omega$ 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 $k\Omega$ . It is connected to a 2.3 $M\Omega$ resistor. What power is developed in the 2.3 $M\Omega$ resistor?

___a) 4.96

\mu

___b) 5.71

\mu

___c) 6.56

\mu

___d) 7.55

\mu

___e) 8.68

\mu

Key to TrigPhysT2_151021_Study-v1s1

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^-1N/C

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

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

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

-e) 7.51 x 10^-1N/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 10¹degrees

-b) 2.81 x 10¹degrees

-c) 3.25 x 10¹degrees

-d) 3.75 x 10¹degrees

-e) 4.33 x 10¹degrees

-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

-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 10⁶ m/s.

-b) 9.1 x 10⁶ m/s.

-c) 1.4 x 10⁷ m/s.

-d) 2 x 10⁷ m/s.

+e) 3.1 x 10⁷ 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 10⁴ m/s.

-b) 10 x 10⁴ m/s.

-c) 1.5 x 10⁵ m/s.

-d) 2.2 x 10⁵ m/s.

+e) 3.4 x 10⁵ m/s.

7. What voltage is required accelerate an electron at rest to a speed of 1.5 x 10³ 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 10⁷ m/s?

+a) 3.3 x 10⁷ volts

-b) 5 x 10⁷ volts

-c) 7.5 x 10⁷ volts

-d) 1.1 x 10⁸ volts

-e) 1.7 x 10⁸ volts

-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 m², 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

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

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

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

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

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

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

-a) 2.28 x 10³ Ω

+b) 2.76 x 10³ Ω

-c) 3.34 x 10³ Ω

-d) 4.05 x 10³ Ω

-e) 4.91 x 10³ Ω

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

-a) 8.93 x 10¹ volts

-b) 1.08 x 10² volts

-c) 1.31 x 10² volts

-d) 1.59 x 10² volts

+e) 1.92 x 10² volts

18. An ideal 7.9 V voltage source is connected to two resistors in parallel. One is 2.4 $k\Omega$ , and the other is 5.2 $k\Omega$ . 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 $m\Omega$ 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 $k\Omega$ . It is connected to a 2.3 $M\Omega$ resistor. What power is developed in the 2.3 $M\Omega$ resistor?

-a) 4.96

\mu

-b) 5.71

\mu

-c) 6.56

\mu

-d) 7.55

\mu

+e) 8.68

\mu

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

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