Michigan Electrician Journeyman
Licensing Exam Questions and Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
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1. What is the primary purpose of the equipment grounding conductor in a
branch circuit?
A. To carry normal neutral current
B. To increase circuit voltage
C. To provide a low-impedance path for fault current
D. To reduce the circuit's conductor size
Correct Answer: C. To provide a low-impedance path for fault current
Rationale: The equipment grounding conductor provides a conductive path for
fault current back to the source so that the overcurrent protective device can
operate promptly. It is not intended to carry normal operating current.
2. Which conductor is normally connected to the grounded terminal of a single-
pole circuit breaker?
A. The ungrounded conductor
B. The grounding electrode conductor
C. The equipment grounding conductor
D. The grounded conductor
Correct Answer: A. The ungrounded conductor
,Rationale: A single-pole circuit breaker is installed in the ungrounded, or hot,
conductor so that opening the breaker disconnects the circuit from the energized
supply. The grounded conductor is not normally protected by a single-pole
overcurrent device.
3. What is the main function of a circuit breaker?
A. Increase available fault current
B. Protect conductors from excessive current
C. Provide a grounding electrode
D. Convert AC power to DC power
Correct Answer: B. Protect conductors from excessive current
Rationale: Circuit breakers provide overcurrent protection by opening a circuit
when current exceeds the permitted level under specified conditions. This helps
protect conductors and equipment from damage caused by excessive current.
4. A 120-volt load draws 10 amperes. What is the approximate power consumed
by the load?
A. 12 watts
B. 120 watts
C. 1,200 watts
D. 12,000 watts
Correct Answer: C. 1,200 watts
Rationale: Electrical power in a simple single-phase circuit can be calculated using
P = E × I. Therefore, 120 volts × 10 amperes = 1,200 watts.
5. What happens to total resistance when two resistors are connected in series?
A. Total resistance decreases below either resistor
B. Total resistance becomes zero
,C. Total resistance equals the smaller resistor
D. Total resistance equals the sum of the individual resistances
Correct Answer: D. Total resistance equals the sum of the individual resistances
Rationale: In a series circuit, current passes through each resistor sequentially, and
the total resistance is the sum of the individual resistances.
6. What is the primary purpose of bonding metal electrical equipment?
A. Establish electrical continuity between conductive parts
B. Increase the operating voltage
C. Reduce conductor ampacity
D. Eliminate overcurrent protection
Correct Answer: A. Establish electrical continuity between conductive parts
Rationale: Bonding connects normally non-current-carrying conductive parts
together so that they have an effective path for fault current and remain at
substantially the same electrical potential.
7. Which condition generally requires a larger conductor ampacity?
A. Lower current
B. Higher current
C. Shorter conductor length in every case
D. Lower circuit voltage in every case
Correct Answer: B. Higher current
Rationale: Conductors must have sufficient ampacity to carry the expected load
current without exceeding their permitted temperature limits. Higher current
generally requires conductors with greater ampacity.
8. What is the purpose of an equipment grounding conductor?
, A. Carry the normal load current
B. Serve as the primary voltage conductor
C. Connect equipment to an effective ground-fault current path
D. Replace the grounded conductor
Correct Answer: C. Connect equipment to an effective ground-fault current path
Rationale: The equipment grounding conductor connects exposed conductive
equipment to the grounding and bonding system, providing a path for fault
current that can operate the overcurrent protective device.
9. Which wiring method uses individual insulated conductors installed inside a
raceway?
A. Cable assembly
B. Raceway wiring
C. Flexible cord only
D. Busway only
Correct Answer: B. Raceway wiring
Rationale: Raceway wiring uses a raceway system to contain individual
conductors. Common raceway types include electrical metallic tubing, rigid metal
conduit, and other approved raceway systems.
10. What is the primary purpose of an electrical junction box?
A. Increase circuit frequency
B. Provide an enclosure for conductor splices or connections
C. Replace the service disconnect
D. Increase conductor ampacity
Correct Answer: B. Provide an enclosure for conductor splices or connections
Rationale: Junction boxes provide a suitable enclosure for electrical connections
and splices while protecting the connections from physical damage and providing
appropriate access.
Licensing Exam Questions and Correct
Answers (Verified Answers) Plus
Rationales 2026 Q&A | Instant
Download Pdf
1. What is the primary purpose of the equipment grounding conductor in a
branch circuit?
A. To carry normal neutral current
B. To increase circuit voltage
C. To provide a low-impedance path for fault current
D. To reduce the circuit's conductor size
Correct Answer: C. To provide a low-impedance path for fault current
Rationale: The equipment grounding conductor provides a conductive path for
fault current back to the source so that the overcurrent protective device can
operate promptly. It is not intended to carry normal operating current.
2. Which conductor is normally connected to the grounded terminal of a single-
pole circuit breaker?
A. The ungrounded conductor
B. The grounding electrode conductor
C. The equipment grounding conductor
D. The grounded conductor
Correct Answer: A. The ungrounded conductor
,Rationale: A single-pole circuit breaker is installed in the ungrounded, or hot,
conductor so that opening the breaker disconnects the circuit from the energized
supply. The grounded conductor is not normally protected by a single-pole
overcurrent device.
3. What is the main function of a circuit breaker?
A. Increase available fault current
B. Protect conductors from excessive current
C. Provide a grounding electrode
D. Convert AC power to DC power
Correct Answer: B. Protect conductors from excessive current
Rationale: Circuit breakers provide overcurrent protection by opening a circuit
when current exceeds the permitted level under specified conditions. This helps
protect conductors and equipment from damage caused by excessive current.
4. A 120-volt load draws 10 amperes. What is the approximate power consumed
by the load?
A. 12 watts
B. 120 watts
C. 1,200 watts
D. 12,000 watts
Correct Answer: C. 1,200 watts
Rationale: Electrical power in a simple single-phase circuit can be calculated using
P = E × I. Therefore, 120 volts × 10 amperes = 1,200 watts.
5. What happens to total resistance when two resistors are connected in series?
A. Total resistance decreases below either resistor
B. Total resistance becomes zero
,C. Total resistance equals the smaller resistor
D. Total resistance equals the sum of the individual resistances
Correct Answer: D. Total resistance equals the sum of the individual resistances
Rationale: In a series circuit, current passes through each resistor sequentially, and
the total resistance is the sum of the individual resistances.
6. What is the primary purpose of bonding metal electrical equipment?
A. Establish electrical continuity between conductive parts
B. Increase the operating voltage
C. Reduce conductor ampacity
D. Eliminate overcurrent protection
Correct Answer: A. Establish electrical continuity between conductive parts
Rationale: Bonding connects normally non-current-carrying conductive parts
together so that they have an effective path for fault current and remain at
substantially the same electrical potential.
7. Which condition generally requires a larger conductor ampacity?
A. Lower current
B. Higher current
C. Shorter conductor length in every case
D. Lower circuit voltage in every case
Correct Answer: B. Higher current
Rationale: Conductors must have sufficient ampacity to carry the expected load
current without exceeding their permitted temperature limits. Higher current
generally requires conductors with greater ampacity.
8. What is the purpose of an equipment grounding conductor?
, A. Carry the normal load current
B. Serve as the primary voltage conductor
C. Connect equipment to an effective ground-fault current path
D. Replace the grounded conductor
Correct Answer: C. Connect equipment to an effective ground-fault current path
Rationale: The equipment grounding conductor connects exposed conductive
equipment to the grounding and bonding system, providing a path for fault
current that can operate the overcurrent protective device.
9. Which wiring method uses individual insulated conductors installed inside a
raceway?
A. Cable assembly
B. Raceway wiring
C. Flexible cord only
D. Busway only
Correct Answer: B. Raceway wiring
Rationale: Raceway wiring uses a raceway system to contain individual
conductors. Common raceway types include electrical metallic tubing, rigid metal
conduit, and other approved raceway systems.
10. What is the primary purpose of an electrical junction box?
A. Increase circuit frequency
B. Provide an enclosure for conductor splices or connections
C. Replace the service disconnect
D. Increase conductor ampacity
Correct Answer: B. Provide an enclosure for conductor splices or connections
Rationale: Junction boxes provide a suitable enclosure for electrical connections
and splices while protecting the connections from physical damage and providing
appropriate access.
