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Assignment 16

Multiple Choice
Identify the choice that best completes the statement or answers the question.
 

 1. 

T5A02 Electrical power is measured in which of the following units?
a.
Volts
c.
Ohms
b.
Watts
d.
Amperes
 

 2. 

T5A10 Which term describes the rate at which electrical energy is used?
a.
Resistance
c.
Power
b.
Current
d.
Voltage
 

 3. 

T5C08 What is the formula used to calculate electrical power in a DC circuit?
a.
Power (P) equals voltage (E) multiplied by current (I)
c.
Power (P) equals voltage (E) minus current (I)
b.
Power (P) equals voltage (E) divided by current (I)
d.
Power (P) equals voltage (E) plus current (I)
 

 4. 

T5C09 How much power is being used in a circuit when the applied voltage is 13.8 volts DC and the current is 10 amperes?
a.
138 watts
c.
23.8 watts
b.
0.7 watts
d.
3.8 watts
 

 5. 

T5C10 How much power is being used in a circuit when the applied voltage is 12 volts DC and the current is 2.5 amperes?
a.
4.8 watts
c.
14.5 watts
b.
30 watts
d.
0.208 watts
 

 6. 

T5C11 How many amperes are flowing in a circuit when the applied voltage is 12 volts DC and the load is 120 watts?
a.
0.1 amperes
c.
12 amperes
b.
10 amperes
d.
132 amperes
 

 7. 

T5D01 What formula is used to calculate current in a circuit?
a.
Current (I) equals voltage (E) multiplied by resistance (R)
c.
Current (I) equals voltage (E) added to resistance (R)
b.
Current (I) equals voltage (E) divided by resistance (R)
d.
Current (I) equals voltage (E) minus resistance (R)
 

 8. 

T5D02 What formula is used to calculate voltage in a circuit?
a.
Voltage (E) equals current (I) multiplied by resistance (R)
c.
Voltage (E) equals current (I) added to resistance (R)
b.
Voltage (E) equals current (I) divided by resistance (R)
d.
Voltage (E) equals current (I) minus resistance (R)
 

 9. 

T5D03 What formula is used to calculate resistance in a circuit?
a.
Resistance (R) equals voltage (E) multiplied by current (I)
c.
Resistance (R) equals voltage (E) added to current (I)
b.
Resistance (R) equals voltage (E) divided by current (I)
d.
Resistance (R) equals voltage (E) minus current (I)
 

 10. 

T5D04 What is the resistance of a circuit in which a current of 3 amperes flows through a resistor connected to 90 volts?
a.
3 ohms
c.
93 ohms
b.
30 ohms
d.
270 ohms
 

 11. 

T5D05 What is the resistance in a circuit for which the applied voltage is 12 volts and the current flow is 1.5 amperes?
a.
18 ohms
c.
8 ohms
b.
0.125 ohms
d.
13.5 ohms
 

 12. 

T5D06 What is the resistance of a circuit that draws 4 amperes from a 12-volt source?
a.
3 ohms
c.
48 ohms
b.
16 ohms
d.
8 Ohms
 

 13. 

T5D07 What is the current flow in a circuit with an applied voltage of 120 volts and a resistance of 80 ohms?
a.
9600 amperes
c.
0.667 amperes
b.
200 amperes
d.
1.5 amperes
 

 14. 

T5D08 What is the current flowing through a 100-ohm resistor connected across 200 volts?
a.
20,000 amperes
c.
2 amperes
b.
0.5 amperes
d.
100 amperes
 

 15. 

T5D09 What is the current flowing through a 24-ohm resistor connected across 240 volts?
a.
24,000 amperes
c.
10 amperes
b.
0.1 amperes
d.
216 amperes
 

 16. 

T5D10 What is the voltage across a 2-ohm resistor if a current of 0.5 amperes flows through it?
a.
1 volt
c.
2.5 volts
b.
0.25 volts
d.
1.5 volts
 

 17. 

T5D11 What is the voltage across a 10-ohm resistor if a current of 1 ampere flows through it?
a.
1 volt
c.
11 volts
b.
10 volts
d.
9 volts
 

 18. 

T5D12 What is the voltage across a 10-ohm resistor if a current of 2 amperes flows through it?
a.
8 volts
c.
12 volts
b.
0.2 volts
d.
20 volts
 



 
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