ALABAMA ELECTRICAL CONTRACTOR
LICENSING EXAM —PRACTICE QUESTIONS
What is the primary purpose of the National Electrical Code
(NEC)?
A. To establish electrical utility rates
B. To provide minimum requirements for safe electrical
installations
C. To regulate electrician wages
D. To replace local building codes
Correct Answer: B
Rationale: The NEC establishes minimum safety requirements
intended to protect people and property from electrical
hazards.
Which organization publishes the National Electrical Code?
A. OSHA
B. ANSI
C. NFPA
,D. IEEE
Correct Answer: C
Rationale: The National Fire Protection Association publishes
NFPA 70, commonly known as the National Electrical Code.
What is the unit used to measure electrical current?
A. Volt
B. Watt
C. Ampere
D. Ohm
Correct Answer: C
Rationale: Electrical current is measured in amperes,
commonly called amps.
What is the unit used to measure electrical resistance?
A. Ohm
B. Volt
C. Ampere
D. Watt
Correct Answer: A
,Rationale: Resistance is measured in ohms and represents
opposition to current flow.
What is the unit used to measure electrical power?
A. Ohm
B. Watt
C. Ampere
D. Volt
Correct Answer: B
Rationale: Electrical power is measured in watts.
Which formula represents Ohm's Law?
A. P = I × R
B. E = I × R
C. R = P × I
D. I = E × R
Correct Answer: B
Rationale: Ohm's Law states that voltage equals current
multiplied by resistance.
A 120-volt circuit has a resistance of 20 ohms. What current
flows?
, A. 2 A
B. 4 A
C. 6 A
D. 10 A
Correct Answer: C
Rationale: Using I = E/R, 120 ÷ 20 = 6 amperes.
What happens to current when resistance increases while
voltage remains constant?
A. Current increases
B. Current decreases
C. Current becomes zero
D. Voltage increases
Correct Answer: B
Rationale: According to Ohm's Law, current is inversely
proportional to resistance when voltage is constant.
What is the purpose of a circuit breaker?
A. Increase voltage
B. Store electricity
LICENSING EXAM —PRACTICE QUESTIONS
What is the primary purpose of the National Electrical Code
(NEC)?
A. To establish electrical utility rates
B. To provide minimum requirements for safe electrical
installations
C. To regulate electrician wages
D. To replace local building codes
Correct Answer: B
Rationale: The NEC establishes minimum safety requirements
intended to protect people and property from electrical
hazards.
Which organization publishes the National Electrical Code?
A. OSHA
B. ANSI
C. NFPA
,D. IEEE
Correct Answer: C
Rationale: The National Fire Protection Association publishes
NFPA 70, commonly known as the National Electrical Code.
What is the unit used to measure electrical current?
A. Volt
B. Watt
C. Ampere
D. Ohm
Correct Answer: C
Rationale: Electrical current is measured in amperes,
commonly called amps.
What is the unit used to measure electrical resistance?
A. Ohm
B. Volt
C. Ampere
D. Watt
Correct Answer: A
,Rationale: Resistance is measured in ohms and represents
opposition to current flow.
What is the unit used to measure electrical power?
A. Ohm
B. Watt
C. Ampere
D. Volt
Correct Answer: B
Rationale: Electrical power is measured in watts.
Which formula represents Ohm's Law?
A. P = I × R
B. E = I × R
C. R = P × I
D. I = E × R
Correct Answer: B
Rationale: Ohm's Law states that voltage equals current
multiplied by resistance.
A 120-volt circuit has a resistance of 20 ohms. What current
flows?
, A. 2 A
B. 4 A
C. 6 A
D. 10 A
Correct Answer: C
Rationale: Using I = E/R, 120 ÷ 20 = 6 amperes.
What happens to current when resistance increases while
voltage remains constant?
A. Current increases
B. Current decreases
C. Current becomes zero
D. Voltage increases
Correct Answer: B
Rationale: According to Ohm's Law, current is inversely
proportional to resistance when voltage is constant.
What is the purpose of a circuit breaker?
A. Increase voltage
B. Store electricity
