West Virginia Barber Written Practice Exam 2025 – Complete Study Resource

Question: 1 / 400

What is the unit of power?

Kilowatt

Ohm

Volt

Watt

The unit of power is watt. Power is the rate at which work is done or energy is transferred. It is measured in watts, named after the Scottish engineer James Watt. One watt is equal to one joule of energy per second.

The other options in the question are related to different units in physics:

- Kilowatt is a larger unit of power where 1 kilowatt is equal to 1000 watts.

- Ohm is the unit of electrical resistance, measured in ohms.

- Volt is the unit of electrical potential difference, measured in volts.

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