Journeyman Electrician Exam Prep
2023/Practice Full Size Exams/Exam
2(100% Accurate)
A series circuit with a voltage drop of 120 volts has a current of 24 amperes and two resistors in
series. The first resistor has a resistance of 3 Ohms. What is the resistance in the second resistor? -
ANSWER2 Ohms
A transformer has a primary coil with 12 turns and a secondary coil with 4 turns. What is the turn
ratio of this transformer? - ANSWER
A step-down transformer with a turn ratio of 3:1 has a primary coil with 36 turns. How many turns
does it have in its secondary coil? - ANSWER
Three 2-Ohm resistors are wired together in a circuit. Two of the resistors are wired together in
parallel. Their combination is then wired in series to the third resistor. What is the total resistance of
the three resistors wired in this configuration? - ANSWER3 Ohms
When installing three 3/0 THHW copper ungrounded conductors in electrical metallic tubing (EMT),
what is the amperage for each conductor with the temperature rating of a conductor in column 75°C,
operating in an ambient temperature of 40°C? - ANSWER
What minimum two-gang (old work) plastic box is required with two 14/2 and two 12/2 nonmetallic
cables with two devices, including integral clamp assembly inside the box? - ANSWER
A 2-Ohm resistor and a 3-Ohm resistor are wired together in a circuit. Which of the following is a true
statement? - ANSWERThe total resistance of the circuit is 5 Ohms when the 2-Ohm and 3-Ohm
resistors are wired in series
Four resistors, A, B, C, and D, are wired together in a circuit. Resistors A and B are wired together in
parallel. Resistors C and D are also wired together in parallel. These two parallel combinations are
then wired together in series. If 2 amperes of electrical current flow through resistor A, 6 amperes
flow through resistor B, and 1 ampere flows through resistor C, how much electrical current flows
through resistor D? - ANSWER
, What resistance would a rheostat need to have in order to have the same resistance as a 2-Ohm
resistor and a 12-Ohm resistor that are wired in series? - ANSWER14 Ohms
What copper gauge (AWG) conductor(s) is required for the above hot water heater? - ANSWER
What is the total resistance of a 3-Ohm resistor, a 5-Ohm resistor, and a 6-Ohm resistor if the three
resistors are all wired in series? - ANSWER14 Ohms
A 5-Ohm resistor, a 7-Ohm resistor, and an 8-Ohm resistor are all wired together in series. If the
resistors are connected to an 8-volt source, how much electrical current will flow through the circuit?
- ANSWER0.4 Amperes (or 400 milliamperes)
An armature has a full-load current of 36A. What is the maximum starting current for that armature?
- ANSWER
A series-parallel circuit has a total voltage drop of 160 volts. It runs through resistor R1 of 5 Ohms
with a current of 20 amperes. In series with this is the parallel circuit with resistor R2 with 12
amperes of current running through it and R3 with 8 amperes of current running through it. What is
the resistance of R2? - ANSWER
A purely resistive AC circuit has a current of 3 amperes and total resistance of 8 Ohms. What is the
total power of the circuit? - ANSWER72 Watts
Why are laminated sheets of steel used in transformer cores? - ANSWER
Four resistors, A, B, C, and D, are wired together in a circuit. Resistors A and B are wired together in
parallel. Resistors C and D are also wired together in parallel. These two parallel combinations are
then wired together in series and connected to a voltage source of 12 volts. If there is a voltage drop
of 3 volts across resistor A, what is the voltage drop across resistor D? – ANSWER
A 2-Ohm resistor and a 5-Ohm resistor are wired in parallel. If there is a voltage drop of 10 volts
across the 5-Ohm resistor, what is the voltage drop across the 2-Ohm resistor? - ANSWERSince the
resistors are in parallel, the voltage drop across each resistor is the same. Therefore, the voltage drop
across the 2-Ohm resistor would also be 10 volts.
An application requires the use of moisture- and heat-resistant thermoplastic insulated conductors.
Which code describes this type of insulation? - ANSWER
2023/Practice Full Size Exams/Exam
2(100% Accurate)
A series circuit with a voltage drop of 120 volts has a current of 24 amperes and two resistors in
series. The first resistor has a resistance of 3 Ohms. What is the resistance in the second resistor? -
ANSWER2 Ohms
A transformer has a primary coil with 12 turns and a secondary coil with 4 turns. What is the turn
ratio of this transformer? - ANSWER
A step-down transformer with a turn ratio of 3:1 has a primary coil with 36 turns. How many turns
does it have in its secondary coil? - ANSWER
Three 2-Ohm resistors are wired together in a circuit. Two of the resistors are wired together in
parallel. Their combination is then wired in series to the third resistor. What is the total resistance of
the three resistors wired in this configuration? - ANSWER3 Ohms
When installing three 3/0 THHW copper ungrounded conductors in electrical metallic tubing (EMT),
what is the amperage for each conductor with the temperature rating of a conductor in column 75°C,
operating in an ambient temperature of 40°C? - ANSWER
What minimum two-gang (old work) plastic box is required with two 14/2 and two 12/2 nonmetallic
cables with two devices, including integral clamp assembly inside the box? - ANSWER
A 2-Ohm resistor and a 3-Ohm resistor are wired together in a circuit. Which of the following is a true
statement? - ANSWERThe total resistance of the circuit is 5 Ohms when the 2-Ohm and 3-Ohm
resistors are wired in series
Four resistors, A, B, C, and D, are wired together in a circuit. Resistors A and B are wired together in
parallel. Resistors C and D are also wired together in parallel. These two parallel combinations are
then wired together in series. If 2 amperes of electrical current flow through resistor A, 6 amperes
flow through resistor B, and 1 ampere flows through resistor C, how much electrical current flows
through resistor D? - ANSWER
, What resistance would a rheostat need to have in order to have the same resistance as a 2-Ohm
resistor and a 12-Ohm resistor that are wired in series? - ANSWER14 Ohms
What copper gauge (AWG) conductor(s) is required for the above hot water heater? - ANSWER
What is the total resistance of a 3-Ohm resistor, a 5-Ohm resistor, and a 6-Ohm resistor if the three
resistors are all wired in series? - ANSWER14 Ohms
A 5-Ohm resistor, a 7-Ohm resistor, and an 8-Ohm resistor are all wired together in series. If the
resistors are connected to an 8-volt source, how much electrical current will flow through the circuit?
- ANSWER0.4 Amperes (or 400 milliamperes)
An armature has a full-load current of 36A. What is the maximum starting current for that armature?
- ANSWER
A series-parallel circuit has a total voltage drop of 160 volts. It runs through resistor R1 of 5 Ohms
with a current of 20 amperes. In series with this is the parallel circuit with resistor R2 with 12
amperes of current running through it and R3 with 8 amperes of current running through it. What is
the resistance of R2? - ANSWER
A purely resistive AC circuit has a current of 3 amperes and total resistance of 8 Ohms. What is the
total power of the circuit? - ANSWER72 Watts
Why are laminated sheets of steel used in transformer cores? - ANSWER
Four resistors, A, B, C, and D, are wired together in a circuit. Resistors A and B are wired together in
parallel. Resistors C and D are also wired together in parallel. These two parallel combinations are
then wired together in series and connected to a voltage source of 12 volts. If there is a voltage drop
of 3 volts across resistor A, what is the voltage drop across resistor D? – ANSWER
A 2-Ohm resistor and a 5-Ohm resistor are wired in parallel. If there is a voltage drop of 10 volts
across the 5-Ohm resistor, what is the voltage drop across the 2-Ohm resistor? - ANSWERSince the
resistors are in parallel, the voltage drop across each resistor is the same. Therefore, the voltage drop
across the 2-Ohm resistor would also be 10 volts.
An application requires the use of moisture- and heat-resistant thermoplastic insulated conductors.
Which code describes this type of insulation? - ANSWER
