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NEC 2017 Journeyman Prep Quiz
Questions and Correct Answers/ Latest
Update / Already Graded
How many 400 W fixtures could be installed on a 120 V 15amp circuit?
A. 3
B. 5
C. 6
D. 8
Ans: 3
Ten 1200 W lightning fixtures are connected on a 277 V system. How
many amps might the circuit draw?
A. 23
B. 60
C. 43
D. 54
Ans: 43
A toaster is listed as 1560 W. When it is plugged into a 120 V circuit and
starts to make toast, how many amperes will it draw?
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A. 1,440
B. 1,680
C. 13
D. 187,200
Ans: 13
You have been asked to add a 4200 W lighting fixture to a 20 amp
lighting circuit. What is the voltage needed to comply with the NEC?
A. 120 V
B. 240 V
C. 277 V
D. none of the above
Ans: 277 V
An electric circuit has a resistance of 20 Ohms. The current is measured
to be 6 A. How many volts are applied to the circuit?
A. 3 1/3
B. 14
C. 26
D. 120
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Ans: 120
An electric motor is running on 120 V. The current is measured to be 2
A. How many ohms of resistance is the motor?
A. 60
B. 118
C. 122
D. 240
Ans: 60
An electrical circuit has a voltage of 50 V and a resistance of 5 Ohms.
What is the value of current?
A. 10 A
B. 45 A
C. 55 A
D. 250 A
Ans:
A series circuit is a circuit that has only one path for _____ flow.
A. Voltage
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B. Current
C. Power
D. Resistance
Ans: Current
In a series circuit with two resistors, the total resistance is equal to the
_____ of the two resistors.
A. Difference
B. Product over the sum
C. Sum
D. Quotient
Ans: Sum
A series circuit has a total resistance of 180 Ohms and an applied
voltage of 120 V. What is the current flow?
A. 300 A
B. 1.5 A
C. 60 A
D. 0.667 A
Ans: 0.667 A
All rights reserved © 2025/ 2026 |
NEC 2017 Journeyman Prep Quiz
Questions and Correct Answers/ Latest
Update / Already Graded
How many 400 W fixtures could be installed on a 120 V 15amp circuit?
A. 3
B. 5
C. 6
D. 8
Ans: 3
Ten 1200 W lightning fixtures are connected on a 277 V system. How
many amps might the circuit draw?
A. 23
B. 60
C. 43
D. 54
Ans: 43
A toaster is listed as 1560 W. When it is plugged into a 120 V circuit and
starts to make toast, how many amperes will it draw?
All rights reserved © 2025/ 2026 |
, Page |2
A. 1,440
B. 1,680
C. 13
D. 187,200
Ans: 13
You have been asked to add a 4200 W lighting fixture to a 20 amp
lighting circuit. What is the voltage needed to comply with the NEC?
A. 120 V
B. 240 V
C. 277 V
D. none of the above
Ans: 277 V
An electric circuit has a resistance of 20 Ohms. The current is measured
to be 6 A. How many volts are applied to the circuit?
A. 3 1/3
B. 14
C. 26
D. 120
All rights reserved © 2025/ 2026 |
, Page |3
Ans: 120
An electric motor is running on 120 V. The current is measured to be 2
A. How many ohms of resistance is the motor?
A. 60
B. 118
C. 122
D. 240
Ans: 60
An electrical circuit has a voltage of 50 V and a resistance of 5 Ohms.
What is the value of current?
A. 10 A
B. 45 A
C. 55 A
D. 250 A
Ans:
A series circuit is a circuit that has only one path for _____ flow.
A. Voltage
All rights reserved © 2025/ 2026 |
, Page |4
B. Current
C. Power
D. Resistance
Ans: Current
In a series circuit with two resistors, the total resistance is equal to the
_____ of the two resistors.
A. Difference
B. Product over the sum
C. Sum
D. Quotient
Ans: Sum
A series circuit has a total resistance of 180 Ohms and an applied
voltage of 120 V. What is the current flow?
A. 300 A
B. 1.5 A
C. 60 A
D. 0.667 A
Ans: 0.667 A
All rights reserved © 2025/ 2026 |
