NYC Electrician (NYC Health + Hospitals –
NYC H+H) Exam– QUESTIONS AND
VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf
The NYC H+H Electrician Exam is a civil service examination for electricians working in
NYC public healthcare facilities. The exam covers NEC installation and repair
requirements (NFPA 70), NYC Electrical Code (NYCEC) amendments, electrical safety
including arc flash protection and lockout/tagout procedures, conduit and wiring
systems, grounding and bonding, electrical calculations such as Ohm‘s law and voltage
drop, motors and motor controls, transformers and distribution systems, emergency
power systems and automatic transfer switches, hospital essential electrical systems per
NFPA 99, and healthcare facility power systems including isolated power systems and
line isolation monitors in patient care areas .
SECTION 1: ELECTRICAL THEORY & FUNDAMENTALS (Questions 1–40)
Q1. What is the unit of measurement for electrical resistance?
A) Volts
B) Amperes
C) Ohms
D) Watts
Correct Answer: C. Ohms
Rationale: Ohms (Ω) measure electrical resistance, the opposition to current flow. Volts
measure electrical potential, amperes measure current, and watts measure power .
,Q2. According to Ohm’s Law, what happens to current when resistance increases while
voltage remains constant?
A) Current increases
B) Current decreases
C) Current remains the same
D) Current doubles
Correct Answer: B. Current decreases
Rationale: According to Ohm’s Law (I = V/R), current is inversely proportional to
resistance. When resistance increases and voltage remains constant, current decreases .
Q3. What is the formula for electrical power?
A) P = I × R
B) P = V × I
C) P = V / R
D) P = I / R
Correct Answer: B. P = V × I
Rationale: The power formula is P = V × I (watts = volts × amperes). This is the
fundamental relationship for calculating electrical power in a DC circuit .
Q4. What is the total resistance of two 10-ohm resistors connected in series?
A) 5 ohms
B) 10 ohms
C) 20 ohms
D) 100 ohms
Correct Answer: C. 20 ohms
,Rationale: In a series circuit, resistances add together. R_total = R1 + R2 = 10Ω + 10Ω =
20Ω .
Q5. What is the total resistance of two 10-ohm resistors connected in parallel?
A) 5 ohms
B) 10 ohms
C) 20 ohms
D) 100 ohms
Correct Answer: A. 5 ohms
Rationale: In a parallel circuit, the reciprocal of total resistance equals the sum of
reciprocals: 1/R_total = 1/10 + 1/10 = 2/10, so R_total = 5Ω .
Q6. In a series circuit, how is voltage distributed?
A) Voltage is the same across all components
B) Voltage divides proportionally across components
C) Voltage is zero across all components
D) Voltage doubles across each component
Correct Answer: B. Voltage divides proportionally across components
Rationale: In a series circuit, voltage divides proportionally across components based
on their resistance values .
Q7. In a parallel circuit, how is current distributed?
A) Current is the same through all branches
B) Current divides proportionally through branches
C) Current is zero through all branches
D) Current doubles through each branch
, Correct Answer: B. Current divides proportionally through branches
Rationale: In a parallel circuit, current divides proportionally through branches based on
their resistance values .
Q8. A 120-volt circuit draws 10 amps continuously for an emergency lighting load. What
is the minimum wattage consumed?
A) 12 watts
B) 120 watts
C) 1,200 watts
D) 12,000 watts
Correct Answer: C. 1,200 watts
Rationale: Power = Voltage × Current = 120V × 10A = 1,200 watts .
Q9. According to Ohm’s Law, what is the resistance of a circuit that draws 2 amperes at
24 volts?
A) 12 ohms
B) 24 ohms
C) 48 ohms
D) 120 ohms
Correct Answer: A. 12 ohms
Rationale: Resistance (R) = Voltage (E) / Current (I) = 24 V / 2 A = 12 ohms .
Q10. What type of current changes direction periodically?
NYC H+H) Exam– QUESTIONS AND
VERIFIED ANSWERS WITH
RATIONALES JUST RELEASED.pdf
The NYC H+H Electrician Exam is a civil service examination for electricians working in
NYC public healthcare facilities. The exam covers NEC installation and repair
requirements (NFPA 70), NYC Electrical Code (NYCEC) amendments, electrical safety
including arc flash protection and lockout/tagout procedures, conduit and wiring
systems, grounding and bonding, electrical calculations such as Ohm‘s law and voltage
drop, motors and motor controls, transformers and distribution systems, emergency
power systems and automatic transfer switches, hospital essential electrical systems per
NFPA 99, and healthcare facility power systems including isolated power systems and
line isolation monitors in patient care areas .
SECTION 1: ELECTRICAL THEORY & FUNDAMENTALS (Questions 1–40)
Q1. What is the unit of measurement for electrical resistance?
A) Volts
B) Amperes
C) Ohms
D) Watts
Correct Answer: C. Ohms
Rationale: Ohms (Ω) measure electrical resistance, the opposition to current flow. Volts
measure electrical potential, amperes measure current, and watts measure power .
,Q2. According to Ohm’s Law, what happens to current when resistance increases while
voltage remains constant?
A) Current increases
B) Current decreases
C) Current remains the same
D) Current doubles
Correct Answer: B. Current decreases
Rationale: According to Ohm’s Law (I = V/R), current is inversely proportional to
resistance. When resistance increases and voltage remains constant, current decreases .
Q3. What is the formula for electrical power?
A) P = I × R
B) P = V × I
C) P = V / R
D) P = I / R
Correct Answer: B. P = V × I
Rationale: The power formula is P = V × I (watts = volts × amperes). This is the
fundamental relationship for calculating electrical power in a DC circuit .
Q4. What is the total resistance of two 10-ohm resistors connected in series?
A) 5 ohms
B) 10 ohms
C) 20 ohms
D) 100 ohms
Correct Answer: C. 20 ohms
,Rationale: In a series circuit, resistances add together. R_total = R1 + R2 = 10Ω + 10Ω =
20Ω .
Q5. What is the total resistance of two 10-ohm resistors connected in parallel?
A) 5 ohms
B) 10 ohms
C) 20 ohms
D) 100 ohms
Correct Answer: A. 5 ohms
Rationale: In a parallel circuit, the reciprocal of total resistance equals the sum of
reciprocals: 1/R_total = 1/10 + 1/10 = 2/10, so R_total = 5Ω .
Q6. In a series circuit, how is voltage distributed?
A) Voltage is the same across all components
B) Voltage divides proportionally across components
C) Voltage is zero across all components
D) Voltage doubles across each component
Correct Answer: B. Voltage divides proportionally across components
Rationale: In a series circuit, voltage divides proportionally across components based
on their resistance values .
Q7. In a parallel circuit, how is current distributed?
A) Current is the same through all branches
B) Current divides proportionally through branches
C) Current is zero through all branches
D) Current doubles through each branch
, Correct Answer: B. Current divides proportionally through branches
Rationale: In a parallel circuit, current divides proportionally through branches based on
their resistance values .
Q8. A 120-volt circuit draws 10 amps continuously for an emergency lighting load. What
is the minimum wattage consumed?
A) 12 watts
B) 120 watts
C) 1,200 watts
D) 12,000 watts
Correct Answer: C. 1,200 watts
Rationale: Power = Voltage × Current = 120V × 10A = 1,200 watts .
Q9. According to Ohm’s Law, what is the resistance of a circuit that draws 2 amperes at
24 volts?
A) 12 ohms
B) 24 ohms
C) 48 ohms
D) 120 ohms
Correct Answer: A. 12 ohms
Rationale: Resistance (R) = Voltage (E) / Current (I) = 24 V / 2 A = 12 ohms .
Q10. What type of current changes direction periodically?
