Quizbank/College Physics/II T3study

TrigPhysT3_151021_Study

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TrigPhysT3_151021_Study-v1s1

1. 3 amps flow through a 1 Ohm resistor. What is the voltage?}

___ a)

3V

___ b)

1V

___ c)

\frac{1}{3}V

___ d) None these are correct.

2. A 1 ohm resistor has 5 volts DC across its terminals. What is the current (I) and the power consumed?}

___ a) I = 5A & P = 9W

___ b) I = 5A & P = 25W.

___ c) I = 5A & P = 5W.

___ d) I = 5A & P = 3W.

3. The voltage across two resistors in series is 10 volts. One resistor is twice as large as the other. What is the voltage across the larger resistor? What is the voltage across the smaller one? }

___ a)

V_{Big-Resistor} = 6.67V

and

V_{small-Resistor} = 3.33V

___ b)

V_{Big-Resistor} = 3.33V

and

V_{small-Resistor} = 6.67V

___ c) None of these are true.

___ d)

V_{small-Resistor} = 5V

and

V_{Big-Resistor} = 5V

4. A 1 ohm, 2 ohm, and 3 ohm resistor are connected in series. What is the total resistance?}

___ a)

R_{Total} = 6\Omega

___ b)

R_{Total} = 0.5454\Omega

___ c)

R_{Total} = 3\Omega

___ d) None of these are true.

5. Two identical resistors are connected in series. The voltage across both of them is 250 volts. What is the voltage across each one?}

___ a)

R_1 = 125V

and

R_2 = 125V

___ b)

R_1 = 250V

and

R_2 = 0V

___ c) None of these are true.

___ d)

R_1 = 150V

and

R_2 = 100V

6. A 1 ohm, 2 ohm, and 3 ohm resistor are connected in parallel. What is the total resistance?}

___ a)

\frac{11}{6}\Omega

___ b)

\frac{6}{3}\Omega

___ c)

\frac{6}{11}\Omega

___ d)

\frac{3}{6}\Omega

7. A 5 ohm and a 2 ohm resistor are connected in parallel. What is the total resistance?}

___ a)

\frac{10}{7}\Omega

___ b)

\frac{6}{10}\Omega

___ c)

\frac{10}{6}\Omega

___ d)

\frac{7}{10}\Omega

8. A 7 ohm and a 3 ohm resistor are connected in parallel. What is the total resistance?}

___ a)

\frac{11}{7}\Omega

___ b)

\frac{7}{11}\Omega

___ c)

\frac{21}{10}\Omega

___ d)

\frac{10}{21}\Omega

9. Three 1 ohm resistors are connected in parallel. What is the total resistance?}

___ a)

\frac{3}{2}\Omega

___ b)

\frac{2}{3}\Omega

___ c)

\frac{1}{3}\Omega

___ d)

3\Omega

10. If you put an infinite number of resistors in parallel, what would the total resistance be?}

___ a)

R_{total}

would approach Zero as The No. of Resistors In parallel Approaches Infinity.

___ b)

R_{total}

would approach 1 as The No. of Resistors In parallel Approaches Infinity

___ c) It is not possible to connect that Number of Resistors in parallel.

___ d) None of these are true.

11. What is the current through R1 and R2 in the figure shown?

___ a)

I_1 = 1A

and

I_2 = 25A

___ b)

I_1 = 1A

and

I_2 = 1.667A

___ c)

I_1 = 10A

and

I_2 = 16.67A

___ d)

I_1 = 0.1A

and

I_2 = 0.1667A

12. Why do we say the "voltage across" or "the voltage with respect to?" Why can't we just say voltage?}

___ a) None these are correct

___ b) Voltage is a measure of Electric Potential difference between two electrical points.

___ c) The other point could be Negative or positive.

___ d) It's an Electrical Cliche.

13. What is the current through R1, R2, R3, and R4 in the figure shown?

___ a)

I_1 = 10A

;

I_2 = 50A

;

I_3 = 33A

;

I_4 = 25A

___ b)

I_1 = 1A

;

I_2 = 5A

;

I_3 = 3.3A

;

I_4 = 2.5A

___ c)

I_1 = 1A

;

I_2 = 0.5A

;

I_3 = 0.33A

;

I_4 = 0.25A

___ d)

I_1 = 0.25A

;

I_2 = 0.33A

;

I_3 = 0.5A

;

I_4 = 0.1A

14. Two resistors are in parallel with a voltage source. How do their voltages compare?}

___ a) One has full voltage, the other has none.

___ b) The voltage across both resistors is the same as the source.

___ c) The voltage across both resistors is half the voltage of the source.

___ d) None of these are true.

15. A resistor consumes 5 watts, and its current is 10 amps. What is its voltage?

___ a) 2V.

___ b) 15V.

___ c) 10V.

___ d) 0.5V.

16. A resistor has 10 volts across it and 4 amps going through it. What is its resistance?}

___ a) None of these are true.

___ b)

4.5\Omega.

___ c)

3.5\Omega.

___ d)

2.5\Omega.

17. If you plot voltage vs. current in a circuit, and you get a linear line, what is the significance of the slope? }

___ a) Resistance.

___ b) None of these are true.

___ c) Discriminant.

___ d) Power.

18. A resistor has 3 volts across it. Its resistance is 1.5 ohms. What is the current?}

___ a) 3A

___ b) 1.5A

___ c) 12A

___ d) 2A

19. A resistor has 8 volts across it and 3 Amps going through it. What is the power consumed?}

___ a) 24W

___ b) 8W

___ c) 2.2W

___ d) 3W

20. A resistor has a voltage of 5 volts and a resistance of 15 ohms. What is the power consumed? }

___ a) None of these are ture.

___ b) 11.67 Joules

___ c) 2.5 Watts

___ d) 1.67 Watts

21. A resistor is on for 5 seconds. It consumes power at a rate of 5 watts. How many joules are used?}

___ a) 3 Joules

___ b) 5 Joules

___ c) 25 Joules

___ d) None of these are true

22. A 621 mF capacitor is connected in series to a 628 kΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e³? (where e =2.7...)

___a) 1.17 x 10⁵ s.

___b) 3.7 x 10⁵ s.

___c) 1.17 x 10⁶ s.

___d) 3.7 x 10⁶ s.

___e) 1.17 x 10⁷ s.

23. A 65 μF capacitor is connected in series to a 414 kΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e⁴? (where e =2.7...)

___a) 1.08 x 10¹ s.

___b) 3.4 x 10¹ s.

___c) 1.08 x 10² s.

___d) 3.4 x 10² s.

___e) 1.08 x 10³ s.

24. A 354 mF capacitor is connected in series to a 407 MΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e³? (where e =2.7...)

___a) 4.32 x 10⁷ s.

___b) 1.37 x 10⁸ s.

___c) 4.32 x 10⁸ s.

___d) 1.37 x 10⁹ s.

___e) 4.32 x 10⁹ s.

25. A 10 F capacitor is connected in series to a 10Ω resistor. If the capacitor is discharged, how long does it take to fall by a factor of e⁴? (where e =2.7...)

___a) 4 x 10⁰ s.

___b) 1.26 x 10¹ s.

___c) 4 x 10¹ s.

___d) 1.26 x 10² s.

___e) 4 x 10² s.

26. A cosmic ray alpha particle encounters Earth's magnetic field at right angles to a field of 5.7 μT. The kinetic energy is 361 keV. What is the radius of particle's orbit?

___a) 1.5 x 10² m.

___b) 4.8 x 10² m.

___c) 1.5 x 10³ m.

___d) 4.8 x 10³ m.

___e) 1.5 x 10⁴ m.

27. Two parallel wires are 7.2 meters long, and are separated by 6.9 mm. What is the force if both wires carry a current of 13.7 amps?

___a) 1.24 x 10^-2 newtons

___b) 3.92 x 10^-2 newtons

___c) 1.24 x 10^-1 newtons

___d) 3.92 x 10^-1 newtons

___e) 1.24 x 10⁰ newtons

28. Blood is flowing at an average rate of 21.5 cm/s in an artery that has an inner diameter of 3.5 mm. What is the voltage across a hall probe placed across the inner diameter of the artery if the perpendicular magnetic field is 0.11 Tesla?

___a) 8.28 x 10^-6 Volts

___b) 2.62 x 10^-5 Volts

___c) 8.28 x 10^-5 Volts

___d) 2.62 x 10^-4 Volts

___e) 8.28 x 10^-4 Volts

29. An electron tube on Earth's surface is oriented horizontally towards magnetic north. The electron is traveling at 0.07c, and Earth's magnetic field makes an angle of 47.5 degrees with respect to the horizontal. To counter the magnetic force, a voltage is applied between two large parallel plates that are 57 mm apart. What must be the applied voltage if the magnetic field is 46μT?

___a) 4.1 x 10⁰ volts

___b) 1.3 x 10¹ volts

___c) 4.1 x 10¹ volts

___d) 1.3 x 10² volts

___e) 4.1 x 10² volts

30. Two orbiting satellites are orbiting at a speed of 52 km/s perpendicular to a magnetic field of 41 μT. They are connected by a cable that is 33 km long. A voltmeter is attached between a satellite and one end of the cable. The voltmeter's internal impedance far exceeds the net resistance through the ionosphere that completes the circuit. What is the measured voltage?

___a) 4.79 x 10⁴ volts.

___b) 5.81 x 10⁴ volts.

___c) 7.04 x 10⁴ volts.

___d) 8.52 x 10⁴ volts.

___e) 1.03 x 10⁵ volts.

31. An loop of wire with 43 turns has a radius of 0.27 meters, and is oriented with its axis parallel to a magetic field of 0.68 Tesla. What is the induced voltage if this field is reduced to 36% of its original value in 3.8 seconds?

___a) 6.34 x 10^-1 volts

___b) 7.68 x 10^-1 volts

___c) 9.31 x 10^-1 volts

___d) 1.13 x 10⁰ volts

___e) 1.37 x 10⁰ volts

Key to TrigPhysT3_151021_Study-v1s1

1. 3 amps flow through a 1 Ohm resistor. What is the voltage?}

+ a)

3V

- b)

1V

- c)

\frac{1}{3}V

- d) None these are correct.

2. A 1 ohm resistor has 5 volts DC across its terminals. What is the current (I) and the power consumed?}

- a) I = 5A & P = 9W

+ b) I = 5A & P = 25W.

- c) I = 5A & P = 5W.

- d) I = 5A & P = 3W.

3. The voltage across two resistors in series is 10 volts. One resistor is twice as large as the other. What is the voltage across the larger resistor? What is the voltage across the smaller one? }

+ a)

V_{Big-Resistor} = 6.67V

and

V_{small-Resistor} = 3.33V

- b)

V_{Big-Resistor} = 3.33V

and

V_{small-Resistor} = 6.67V

- c) None of these are true.

- d)

V_{small-Resistor} = 5V

and

V_{Big-Resistor} = 5V

4. A 1 ohm, 2 ohm, and 3 ohm resistor are connected in series. What is the total resistance?}

+ a)

R_{Total} = 6\Omega

- b)

R_{Total} = 0.5454\Omega

- c)

R_{Total} = 3\Omega

- d) None of these are true.

5. Two identical resistors are connected in series. The voltage across both of them is 250 volts. What is the voltage across each one?}

+ a)

R_1 = 125V

and

R_2 = 125V

- b)

R_1 = 250V

and

R_2 = 0V

- c) None of these are true.

- d)

R_1 = 150V

and

R_2 = 100V

6. A 1 ohm, 2 ohm, and 3 ohm resistor are connected in parallel. What is the total resistance?}

- a)

\frac{11}{6}\Omega

- b)

\frac{6}{3}\Omega

+ c)

\frac{6}{11}\Omega

- d)

\frac{3}{6}\Omega

7. A 5 ohm and a 2 ohm resistor are connected in parallel. What is the total resistance?}

+ a)

\frac{10}{7}\Omega

- b)

\frac{6}{10}\Omega

- c)

\frac{10}{6}\Omega

- d)

\frac{7}{10}\Omega

8. A 7 ohm and a 3 ohm resistor are connected in parallel. What is the total resistance?}

- a)

\frac{11}{7}\Omega

- b)

\frac{7}{11}\Omega

+ c)

\frac{21}{10}\Omega

- d)

\frac{10}{21}\Omega

9. Three 1 ohm resistors are connected in parallel. What is the total resistance?}

- a)

\frac{3}{2}\Omega

- b)

\frac{2}{3}\Omega

+ c)

\frac{1}{3}\Omega

- d)

3\Omega

10. If you put an infinite number of resistors in parallel, what would the total resistance be?}

+ a)

R_{total}

would approach Zero as The No. of Resistors In parallel Approaches Infinity.

- b)

R_{total}

would approach 1 as The No. of Resistors In parallel Approaches Infinity

- c) It is not possible to connect that Number of Resistors in parallel.

- d) None of these are true.

11. What is the current through R1 and R2 in the figure shown?

- a)

I_1 = 1A

and

I_2 = 25A

+ b)

I_1 = 1A

and

I_2 = 1.667A

- c)

I_1 = 10A

and

I_2 = 16.67A

- d)

I_1 = 0.1A

and

I_2 = 0.1667A

12. Why do we say the "voltage across" or "the voltage with respect to?" Why can't we just say voltage?}

- a) None these are correct

+ b) Voltage is a measure of Electric Potential difference between two electrical points.

- c) The other point could be Negative or positive.

- d) It's an Electrical Cliche.

13. What is the current through R1, R2, R3, and R4 in the figure shown?

- a)

I_1 = 10A

;

I_2 = 50A

;

I_3 = 33A

;

I_4 = 25A

- b)

I_1 = 1A

;

I_2 = 5A

;

I_3 = 3.3A

;

I_4 = 2.5A

+ c)

I_1 = 1A

;

I_2 = 0.5A

;

I_3 = 0.33A

;

I_4 = 0.25A

- d)

I_1 = 0.25A

;

I_2 = 0.33A

;

I_3 = 0.5A

;

I_4 = 0.1A

14. Two resistors are in parallel with a voltage source. How do their voltages compare?}

- a) One has full voltage, the other has none.

+ b) The voltage across both resistors is the same as the source.

- c) The voltage across both resistors is half the voltage of the source.

- d) None of these are true.

15. A resistor consumes 5 watts, and its current is 10 amps. What is its voltage?

- a) 2V.

- b) 15V.

- c) 10V.

+ d) 0.5V.

16. A resistor has 10 volts across it and 4 amps going through it. What is its resistance?}

- a) None of these are true.

- b)

4.5\Omega.

- c)

3.5\Omega.

+ d)

2.5\Omega.

17. If you plot voltage vs. current in a circuit, and you get a linear line, what is the significance of the slope? }

+ a) Resistance.

- b) None of these are true.

- c) Discriminant.

- d) Power.

18. A resistor has 3 volts across it. Its resistance is 1.5 ohms. What is the current?}

- a) 3A

- b) 1.5A

- c) 12A

+ d) 2A

19. A resistor has 8 volts across it and 3 Amps going through it. What is the power consumed?}

+ a) 24W

- b) 8W

- c) 2.2W

- d) 3W

20. A resistor has a voltage of 5 volts and a resistance of 15 ohms. What is the power consumed? }

- a) None of these are ture.

- b) 11.67 Joules

- c) 2.5 Watts

+ d) 1.67 Watts

21. A resistor is on for 5 seconds. It consumes power at a rate of 5 watts. How many joules are used?}

- a) 3 Joules

- b) 5 Joules

+ c) 25 Joules

- d) None of these are true

22. A 621 mF capacitor is connected in series to a 628 kΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e³? (where e =2.7...)

-a) 1.17 x 10⁵ s.

-b) 3.7 x 10⁵ s.

+c) 1.17 x 10⁶ s.

-d) 3.7 x 10⁶ s.

-e) 1.17 x 10⁷ s.

23. A 65 μF capacitor is connected in series to a 414 kΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e⁴? (where e =2.7...)

-a) 1.08 x 10¹ s.

-b) 3.4 x 10¹ s.

+c) 1.08 x 10² s.

-d) 3.4 x 10² s.

-e) 1.08 x 10³ s.

24. A 354 mF capacitor is connected in series to a 407 MΩ resistor. If the capacitor is discharged, how long does it take to fall by a factor of e³? (where e =2.7...)

-a) 4.32 x 10⁷ s.

-b) 1.37 x 10⁸ s.

+c) 4.32 x 10⁸ s.

-d) 1.37 x 10⁹ s.

-e) 4.32 x 10⁹ s.

25. A 10 F capacitor is connected in series to a 10Ω resistor. If the capacitor is discharged, how long does it take to fall by a factor of e⁴? (where e =2.7...)

-a) 4 x 10⁰ s.

-b) 1.26 x 10¹ s.

-c) 4 x 10¹ s.

-d) 1.26 x 10² s.

+e) 4 x 10² s.

26. A cosmic ray alpha particle encounters Earth's magnetic field at right angles to a field of 5.7 μT. The kinetic energy is 361 keV. What is the radius of particle's orbit?

-a) 1.5 x 10² m.

-b) 4.8 x 10² m.

-c) 1.5 x 10³ m.

-d) 4.8 x 10³ m.

+e) 1.5 x 10⁴ m.

27. Two parallel wires are 7.2 meters long, and are separated by 6.9 mm. What is the force if both wires carry a current of 13.7 amps?

-a) 1.24 x 10^-2 newtons

+b) 3.92 x 10^-2 newtons

-c) 1.24 x 10^-1 newtons

-d) 3.92 x 10^-1 newtons

-e) 1.24 x 10⁰ newtons

-a) 8.28 x 10^-6 Volts

-b) 2.62 x 10^-5 Volts

+c) 8.28 x 10^-5 Volts

-d) 2.62 x 10^-4 Volts

-e) 8.28 x 10^-4 Volts

-a) 4.1 x 10⁰ volts

-b) 1.3 x 10¹ volts

+c) 4.1 x 10¹ volts

-d) 1.3 x 10² volts

-e) 4.1 x 10² volts

-a) 4.79 x 10⁴ volts.

-b) 5.81 x 10⁴ volts.

+c) 7.04 x 10⁴ volts.

-d) 8.52 x 10⁴ volts.

-e) 1.03 x 10⁵ volts.

-a) 6.34 x 10^-1 volts

-b) 7.68 x 10^-1 volts

-c) 9.31 x 10^-1 volts

+d) 1.13 x 10⁰ volts

-e) 1.37 x 10⁰ volts

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

http://en.wikiversity.org/w/index.php?title=Electric_Circuit_Analysis/Circuit_Analysis_Quiz_1/Electric_Circuit_Analysis_quiz_1&oldid=1391147

http://en.wikiversity.org/w/index.php?title=Physics_equations/21-Circuits,_Bioelectricity,_and_DC_Instruments/Q:RCdecay&oldid=1391133

http://en.wikiversity.org/w/index.php?title=Physics_equations/22-Magnetism/Q:forces&oldid=1391166

http://en.wikiversity.org/w/index.php?title=Physics_equations/18-Electric_charge_and_field/Q:findE&oldid=1378605

Study guide

http://en.wikiversity.org/wiki/Electric_Circuit_Analysis

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

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