, Alaska Journeyman Electrician Exam – Practice Question
Bank
200 Questions with Verified Answers & Detailed
Rationales
Section 1: General Electrical Knowledge & Theory
(Questions 1–30)
1. What is the unit of measurement for electrical current?
• A. Volt
• B. Ohm
• C. Ampere
• D. Watt
• C. Ampere
Rationale: The ampere (amp) is the SI unit for measuring
electrical current, which is the flow of electric charge through
a conductor. Voltage is measured in volts, resistance in ohms,
and power in watts. This is a fundamental concept tested on
the journeyman exam.
, 2. According to Ohm's Law, what is the formula for
calculating voltage?
• A. V = I × R
• B. V = I / R
• C. V = R / I
• D. V = P × I
• A. V = I × R
Rationale: Ohm's Law states that voltage (V) equals current
(I) multiplied by resistance (R). This is a foundational
electrical theory concept that appears frequently on the
journeyman exam. Understanding this relationship is essential
for circuit analysis and troubleshooting.
3. What is the maximum number of conductors permitted
in a 3/4-inch EMT conduit according to NEC Chapter 9,
Table 1?
• A. 4
• B. 6
• C. 8
• D. Depends on the conductor size and insulation type
• D. Depends on the conductor size and insulation type
Rationale: Conduit fill is determined by the size and insulation
type of the conductors. NEC Chapter 9 provides Tables 4 and 5
, for conduit fill calculations. The number of conductors allowed
depends on the conductor's cross-sectional area and the
conduit's internal area. The maximum fill is typically 40% for
more than two conductors.
4. A resistor has a resistance of 100 ohms and a current of
2 amps flowing through it. What is the voltage drop
across the resistor?
• A. 50 V
• B. 100 V
• C. 200 V
• D. 400 V
• C. 200 V
Rationale: Using Ohm's Law: V = I × R = 2 A × 100 Ω = 200 V.
This calculation is fundamental to electrical theory and is
frequently tested. The voltage drop across a resistor is directly
proportional to the current and resistance.
5. What is the power consumption of a device that draws
10 amps at 120 volts?
• A. 120 W
• B. 600 W
• C. 1,200 W
• D. 2,400 W
Bank
200 Questions with Verified Answers & Detailed
Rationales
Section 1: General Electrical Knowledge & Theory
(Questions 1–30)
1. What is the unit of measurement for electrical current?
• A. Volt
• B. Ohm
• C. Ampere
• D. Watt
• C. Ampere
Rationale: The ampere (amp) is the SI unit for measuring
electrical current, which is the flow of electric charge through
a conductor. Voltage is measured in volts, resistance in ohms,
and power in watts. This is a fundamental concept tested on
the journeyman exam.
, 2. According to Ohm's Law, what is the formula for
calculating voltage?
• A. V = I × R
• B. V = I / R
• C. V = R / I
• D. V = P × I
• A. V = I × R
Rationale: Ohm's Law states that voltage (V) equals current
(I) multiplied by resistance (R). This is a foundational
electrical theory concept that appears frequently on the
journeyman exam. Understanding this relationship is essential
for circuit analysis and troubleshooting.
3. What is the maximum number of conductors permitted
in a 3/4-inch EMT conduit according to NEC Chapter 9,
Table 1?
• A. 4
• B. 6
• C. 8
• D. Depends on the conductor size and insulation type
• D. Depends on the conductor size and insulation type
Rationale: Conduit fill is determined by the size and insulation
type of the conductors. NEC Chapter 9 provides Tables 4 and 5
, for conduit fill calculations. The number of conductors allowed
depends on the conductor's cross-sectional area and the
conduit's internal area. The maximum fill is typically 40% for
more than two conductors.
4. A resistor has a resistance of 100 ohms and a current of
2 amps flowing through it. What is the voltage drop
across the resistor?
• A. 50 V
• B. 100 V
• C. 200 V
• D. 400 V
• C. 200 V
Rationale: Using Ohm's Law: V = I × R = 2 A × 100 Ω = 200 V.
This calculation is fundamental to electrical theory and is
frequently tested. The voltage drop across a resistor is directly
proportional to the current and resistance.
5. What is the power consumption of a device that draws
10 amps at 120 volts?
• A. 120 W
• B. 600 W
• C. 1,200 W
• D. 2,400 W
