Ohio Electrical Meter Technician Exam

Ohio Electrical Meter Technician Exam Practice Questions And Correct Answers (Verified Answers) Plus Rationales 2025|2026 Q&A | Instant Download Pdf

• What is the primary function of an electrical meter?
• To control current flow
• To store electrical energy
• To measure electrical quantities
• To convert AC to DC

Rationale: Electrical meters are designed to measure electrical

parameters such as voltage, current, and power usage.

• Which unit measures electrical current?
• Volt
• Watt
• Ampere
• Ohm 1 / 4

Rationale: Current is measured in amperes, which quantify the rate

of electron flow through a conductor.

• What type of current do residential electric meters typically measure?
• Direct Current (DC)
• Alternating Current (AC)
• Pulsating DC
• Static current

Rationale: Residential systems use AC because it is efficient for

power transmission and distribution.

• What device is used to measure voltage in a circuit?
• Ammeter
• Voltmeter
• Wattmeter
• Ohmmeter

Rationale: A voltmeter measures the potential difference between

two points in a circuit.

5. The total resistance in a series circuit is:

• Less than the smallest resistor
• The sum of all resistors
• Equal to the largest resistor
• Found by dividing voltage by current

Rationale: In series, resistances add directly because current passes

through each resistor sequentially. 2 / 4

• What does Ohm’s Law state?

A. V = I × R

B. P = V × I

C. E = I × T

D. R = P × I

Rationale: Ohm’s Law defines the relationship between voltage,

current, and resistance.

• What instrument measures power consumption over time?
• Ammeter
• Voltmeter
• Watt-hour meter
• Transformer

Rationale: Watt-hour meters measure energy usage, typically in

kilowatt-hours (kWh).

• A 240V circuit with a 12Ω load will draw how much current?
• 5A

B. 20A

C. 10A

D. 15A

Rationale: Using Ohm’s Law, I = V/R = 240/12 = 20A.

• What does kWh stand for?
• Kilowatt per hour
• Kilowatt-hour 3 / 4

• Kiloamp-hour
• Kilovolt-hour

Rationale: A kilowatt-hour represents the energy consumed by a

1kW load for 1 hour.

10. A transformer’s main purpose is to:

• Change voltage levels
• Measure current
• Convert AC to DC
• Store magnetic energy

Rationale: Transformers increase or decrease AC voltage through

electromagnetic induction.

• What type of meter measures both voltage and current?
• Watt-hour meter
• Megohmmeter
• Wattmeter
• Oscilloscope

Rationale: A wattmeter combines voltage and current readings to

determine power usage.

• What safety device protects circuits from overload?
• Switch
• Fuse
• Resistor
• / 4