# User:Guy vandegrift/Quizbank/Archive1/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) ${\displaystyle 3V}$
___ b) ${\displaystyle 1V}$
___ c) ${\displaystyle {\frac {1}{3}}V}$
___ 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) ${\displaystyle V_{Big-Resistor}=6.67V}$ and ${\displaystyle V_{small-Resistor}=3.33V}$.
___ b) ${\displaystyle V_{Big-Resistor}=3.33V}$ and${\displaystyle V_{small-Resistor}=6.67V}$.
___ c) None of these are true.
___ d) ${\displaystyle V_{small-Resistor}=5V}$ and ${\displaystyle V_{Big-Resistor}=5V}$.

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

___ a) ${\displaystyle R_{Total}=6\Omega }$.
___ b) ${\displaystyle R_{Total}=0.5454\Omega }$.
___ c) ${\displaystyle R_{Total}=3\Omega }$.
___ 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) ${\displaystyle R_{1}=125V}$ and ${\displaystyle R_{2}=125V}$.
___ b) ${\displaystyle R_{1}=250V}$ and ${\displaystyle R_{2}=0V}$.
___ c) None of these are true.
___ d) ${\displaystyle R_{1}=150V}$ and ${\displaystyle R_{2}=100V}$.

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

___ a) ${\displaystyle {\frac {11}{6}}\Omega }$.
___ b) ${\displaystyle {\frac {6}{3}}\Omega }$.
___ c) ${\displaystyle {\frac {6}{11}}\Omega }$.
___ d) ${\displaystyle {\frac {3}{6}}\Omega }$.

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

___ a) ${\displaystyle {\frac {10}{7}}\Omega }$.
___ b) ${\displaystyle {\frac {6}{10}}\Omega }$.
___ c) ${\displaystyle {\frac {10}{6}}\Omega }$.
___ d) ${\displaystyle {\frac {7}{10}}\Omega }$.

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

___ a) ${\displaystyle {\frac {11}{7}}\Omega }$.
___ b) ${\displaystyle {\frac {7}{11}}\Omega }$.
___ c) ${\displaystyle {\frac {21}{10}}\Omega }$.
___ d) ${\displaystyle {\frac {10}{21}}\Omega }$.

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

___ a) ${\displaystyle {\frac {3}{2}}\Omega }$.
___ b) ${\displaystyle {\frac {2}{3}}\Omega }$.
___ c) ${\displaystyle {\frac {1}{3}}\Omega }$.
___ d) ${\displaystyle 3\Omega }$.

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

___ a) ${\displaystyle R_{total}}$ would approach Zero as The No. of Resistors In parallel Approaches Infinity.
___ b) ${\displaystyle R_{total}}$ 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) ${\displaystyle I_{1}=1A}$ and ${\displaystyle I_{2}=25A}$.
___ b) ${\displaystyle I_{1}=1A}$ and ${\displaystyle I_{2}=1.667A}$.
___ c) ${\displaystyle I_{1}=10A}$ and ${\displaystyle I_{2}=16.67A}$.
___ d) ${\displaystyle I_{1}=0.1A}$ and ${\displaystyle I_{2}=0.1667A}$.

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) ${\displaystyle I_{1}=10A}$; ${\displaystyle I_{2}=50A}$; ${\displaystyle I_{3}=33A}$; ${\displaystyle I_{4}=25A}$..
___ b) ${\displaystyle I_{1}=1A}$; ${\displaystyle I_{2}=5A}$; ${\displaystyle I_{3}=3.3A}$; ${\displaystyle I_{4}=2.5A}$.
___ c) ${\displaystyle I_{1}=1A}$; ${\displaystyle I_{2}=0.5A}$; ${\displaystyle I_{3}=0.33A}$; ${\displaystyle I_{4}=0.25A}$.
___ d) ${\displaystyle I_{1}=0.25A}$; ${\displaystyle I_{2}=0.33A}$; ${\displaystyle I_{3}=0.5A}$; ${\displaystyle I_{4}=0.1A}$.

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) ${\displaystyle 4.5\Omega .}$
___ c) ${\displaystyle 3.5\Omega .}$
___ d) ${\displaystyle 2.5\Omega .}$

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) ${\displaystyle 3V}$
- b) ${\displaystyle 1V}$
- c) ${\displaystyle {\frac {1}{3}}V}$
- 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) ${\displaystyle V_{Big-Resistor}=6.67V}$ and ${\displaystyle V_{small-Resistor}=3.33V}$.
- b) ${\displaystyle V_{Big-Resistor}=3.33V}$ and${\displaystyle V_{small-Resistor}=6.67V}$.
- c) None of these are true.
- d) ${\displaystyle V_{small-Resistor}=5V}$ and ${\displaystyle V_{Big-Resistor}=5V}$.

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

+ a) ${\displaystyle R_{Total}=6\Omega }$.
- b) ${\displaystyle R_{Total}=0.5454\Omega }$.
- c) ${\displaystyle R_{Total}=3\Omega }$.
- 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) ${\displaystyle R_{1}=125V}$ and ${\displaystyle R_{2}=125V}$.
- b) ${\displaystyle R_{1}=250V}$ and ${\displaystyle R_{2}=0V}$.
- c) None of these are true.
- d) ${\displaystyle R_{1}=150V}$ and ${\displaystyle R_{2}=100V}$.

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

- a) ${\displaystyle {\frac {11}{6}}\Omega }$.
- b) ${\displaystyle {\frac {6}{3}}\Omega }$.
+ c) ${\displaystyle {\frac {6}{11}}\Omega }$.
- d) ${\displaystyle {\frac {3}{6}}\Omega }$.

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

+ a) ${\displaystyle {\frac {10}{7}}\Omega }$.
- b) ${\displaystyle {\frac {6}{10}}\Omega }$.
- c) ${\displaystyle {\frac {10}{6}}\Omega }$.
- d) ${\displaystyle {\frac {7}{10}}\Omega }$.

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

- a) ${\displaystyle {\frac {11}{7}}\Omega }$.
- b) ${\displaystyle {\frac {7}{11}}\Omega }$.
+ c) ${\displaystyle {\frac {21}{10}}\Omega }$.
- d) ${\displaystyle {\frac {10}{21}}\Omega }$.

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

- a) ${\displaystyle {\frac {3}{2}}\Omega }$.
- b) ${\displaystyle {\frac {2}{3}}\Omega }$.
+ c) ${\displaystyle {\frac {1}{3}}\Omega }$.
- d) ${\displaystyle 3\Omega }$.

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

+ a) ${\displaystyle R_{total}}$ would approach Zero as The No. of Resistors In parallel Approaches Infinity.
- b) ${\displaystyle R_{total}}$ 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) ${\displaystyle I_{1}=1A}$ and ${\displaystyle I_{2}=25A}$.
+ b) ${\displaystyle I_{1}=1A}$ and ${\displaystyle I_{2}=1.667A}$.
- c) ${\displaystyle I_{1}=10A}$ and ${\displaystyle I_{2}=16.67A}$.
- d) ${\displaystyle I_{1}=0.1A}$ and ${\displaystyle I_{2}=0.1667A}$.

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) ${\displaystyle I_{1}=10A}$; ${\displaystyle I_{2}=50A}$; ${\displaystyle I_{3}=33A}$; ${\displaystyle I_{4}=25A}$..
- b) ${\displaystyle I_{1}=1A}$; ${\displaystyle I_{2}=5A}$; ${\displaystyle I_{3}=3.3A}$; ${\displaystyle I_{4}=2.5A}$.
+ c) ${\displaystyle I_{1}=1A}$; ${\displaystyle I_{2}=0.5A}$; ${\displaystyle I_{3}=0.33A}$; ${\displaystyle I_{4}=0.25A}$.
- d) ${\displaystyle I_{1}=0.25A}$; ${\displaystyle I_{2}=0.33A}$; ${\displaystyle I_{3}=0.5A}$; ${\displaystyle I_{4}=0.1A}$.

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) ${\displaystyle 4.5\Omega .}$
- c) ${\displaystyle 3.5\Omega .}$
+ d) ${\displaystyle 2.5\Omega .}$

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