FLORIDA ELECTRICAL THEORY LICENSING EXAMINATION COMPLETE PRACTICE
EXAM | COMPREHENSIVE PRACTICE QUESTIONS AND DETAILED ANSWERS |
UPDATED 2026/2027 STUDY GUIDE
Examiner/Administrator: Florida Department of Business and Professional
Regulation (DBPR)
FLORIDA ELECTRICAL THEORY LICENSING
EXAMINATION
2026/2027 EDITION
COMPLETE PRACTICE EXAM
120 ORIGINAL MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 75%
TESTING TIME: 180 MINUTES
TABLE OF CONTENTS
1. Basic Electrical Theory
2. DC and AC Circuit Analysis
3. Electrical Quantities & Calculations
4. Conductors, Cables & Wiring Methods
5. Transformers & Power Distribution
6. Motors, Controls & Protection
7. Grounding & Bonding Principles
8. Electrical Safety & Hazard Prevention
9. Electrical Troubleshooting
10. National Electrical Code (NEC) Theory & Applications
,FLORIDA DEPARTMENT OF BUSINESS AND PROFESSIONAL REGULATION (DBPR) ||
ALIGNED WITH CURRENT FLORIDA ELECTRICAL LICENSING BLUEPRINTS ||
ELECTRICAL THEORY COMPETENCY ASSESSMENT || PROFESSIONAL STUDY GUIDE
|| ORIGINAL PRACTICE QUESTIONS WITH DETAILED EXPLANATIONS ||
COMPREHENSIVE EXAM PREPARATION || PREPARED FOR LICENSING &
CERTIFICATION PURPOSES || PROFESSIONAL EXAMINATION USE
Basic Electrical Theory (Questions 1–8)
QUESTION 1.
A maintenance electrician measures a 240-volt circuit supplying a purely resistive
heating element drawing 20 amperes. Assuming ideal conditions, what is the
electrical power consumed by the load?
A. 2,400 W
B. 3,600 W
C. 4,800 W
D. 5,200 W
Correct Answer: C. 4,800 W
Explanation: Electrical power in a resistive circuit is determined using the equation P =
V × I. Multiplying 240 volts by 20 amperes results in 4,800 watts. Option A
underestimates the load, Option B results from an incorrect current value, and Option
D exceeds the calculated power. Understanding this relationship is fundamental for
conductor sizing, overcurrent protection, and load calculations.
QUESTION 2.
An electrician increases the resistance of a circuit while maintaining a constant
voltage source. According to Ohm's Law, what will occur?
A. Current increases proportionally.
,B. Current remains unchanged.
C. Current decreases.
D. Power factor increases.
Correct Answer: C. Current decreases.
Explanation: Ohm's Law states I = V/R. With voltage remaining constant, increasing
resistance causes current to decrease. Option A is opposite of the law, Option B ignores
the inverse relationship, and Option D relates to AC circuit characteristics rather than
simple resistance changes.
QUESTION 3.
Which property of copper primarily makes it the preferred conductor for most
electrical installations?
A. High magnetic permeability
B. High electrical conductivity
C. Low melting temperature
D. High electrical resistance
Correct Answer: B. High electrical conductivity.
Explanation: Copper offers excellent electrical conductivity, mechanical strength, and
corrosion resistance. High conductivity minimizes voltage drop and energy loss. Option
A describes magnetic materials, Option C is undesirable for conductors, and Option D
contradicts copper's principal advantage.
QUESTION 4.
A conductor carries electric current because electrons move due to which
fundamental electrical quantity?
, A. Capacitance
B. Voltage difference
C. Frequency
D. Reactance
Correct Answer: B. Voltage difference.
Explanation: Voltage, or electrical potential difference, provides the force that drives
electrons through a conductor. Capacitance stores energy, frequency applies to
alternating current, and reactance opposes AC flow but does not initiate electron
movement.
QUESTION 5.
Two identical resistors are connected in series across a voltage source. Compared to
a single resistor, the circuit current will be:
A. Twice as large
B. Four times larger
C. Half as large
D. Unchanged
Correct Answer: C. Half as large.
Explanation: Connecting equal resistors in series doubles total resistance. Since current
equals voltage divided by resistance, doubling resistance cuts current in half. The
remaining choices contradict Ohm's Law.
QUESTION 6.
An apprentice accidentally reverses the polarity of a DC supply feeding a permanent
magnet DC motor. What is the most likely result?
EXAM | COMPREHENSIVE PRACTICE QUESTIONS AND DETAILED ANSWERS |
UPDATED 2026/2027 STUDY GUIDE
Examiner/Administrator: Florida Department of Business and Professional
Regulation (DBPR)
FLORIDA ELECTRICAL THEORY LICENSING
EXAMINATION
2026/2027 EDITION
COMPLETE PRACTICE EXAM
120 ORIGINAL MULTIPLE-CHOICE QUESTIONS
PASSING SCORE: 75%
TESTING TIME: 180 MINUTES
TABLE OF CONTENTS
1. Basic Electrical Theory
2. DC and AC Circuit Analysis
3. Electrical Quantities & Calculations
4. Conductors, Cables & Wiring Methods
5. Transformers & Power Distribution
6. Motors, Controls & Protection
7. Grounding & Bonding Principles
8. Electrical Safety & Hazard Prevention
9. Electrical Troubleshooting
10. National Electrical Code (NEC) Theory & Applications
,FLORIDA DEPARTMENT OF BUSINESS AND PROFESSIONAL REGULATION (DBPR) ||
ALIGNED WITH CURRENT FLORIDA ELECTRICAL LICENSING BLUEPRINTS ||
ELECTRICAL THEORY COMPETENCY ASSESSMENT || PROFESSIONAL STUDY GUIDE
|| ORIGINAL PRACTICE QUESTIONS WITH DETAILED EXPLANATIONS ||
COMPREHENSIVE EXAM PREPARATION || PREPARED FOR LICENSING &
CERTIFICATION PURPOSES || PROFESSIONAL EXAMINATION USE
Basic Electrical Theory (Questions 1–8)
QUESTION 1.
A maintenance electrician measures a 240-volt circuit supplying a purely resistive
heating element drawing 20 amperes. Assuming ideal conditions, what is the
electrical power consumed by the load?
A. 2,400 W
B. 3,600 W
C. 4,800 W
D. 5,200 W
Correct Answer: C. 4,800 W
Explanation: Electrical power in a resistive circuit is determined using the equation P =
V × I. Multiplying 240 volts by 20 amperes results in 4,800 watts. Option A
underestimates the load, Option B results from an incorrect current value, and Option
D exceeds the calculated power. Understanding this relationship is fundamental for
conductor sizing, overcurrent protection, and load calculations.
QUESTION 2.
An electrician increases the resistance of a circuit while maintaining a constant
voltage source. According to Ohm's Law, what will occur?
A. Current increases proportionally.
,B. Current remains unchanged.
C. Current decreases.
D. Power factor increases.
Correct Answer: C. Current decreases.
Explanation: Ohm's Law states I = V/R. With voltage remaining constant, increasing
resistance causes current to decrease. Option A is opposite of the law, Option B ignores
the inverse relationship, and Option D relates to AC circuit characteristics rather than
simple resistance changes.
QUESTION 3.
Which property of copper primarily makes it the preferred conductor for most
electrical installations?
A. High magnetic permeability
B. High electrical conductivity
C. Low melting temperature
D. High electrical resistance
Correct Answer: B. High electrical conductivity.
Explanation: Copper offers excellent electrical conductivity, mechanical strength, and
corrosion resistance. High conductivity minimizes voltage drop and energy loss. Option
A describes magnetic materials, Option C is undesirable for conductors, and Option D
contradicts copper's principal advantage.
QUESTION 4.
A conductor carries electric current because electrons move due to which
fundamental electrical quantity?
, A. Capacitance
B. Voltage difference
C. Frequency
D. Reactance
Correct Answer: B. Voltage difference.
Explanation: Voltage, or electrical potential difference, provides the force that drives
electrons through a conductor. Capacitance stores energy, frequency applies to
alternating current, and reactance opposes AC flow but does not initiate electron
movement.
QUESTION 5.
Two identical resistors are connected in series across a voltage source. Compared to
a single resistor, the circuit current will be:
A. Twice as large
B. Four times larger
C. Half as large
D. Unchanged
Correct Answer: C. Half as large.
Explanation: Connecting equal resistors in series doubles total resistance. Since current
equals voltage divided by resistance, doubling resistance cuts current in half. The
remaining choices contradict Ohm's Law.
QUESTION 6.
An apprentice accidentally reverses the polarity of a DC supply feeding a permanent
magnet DC motor. What is the most likely result?
