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SESK: Stuff Everyone Should Know · sesk.info/ham-power-measured-watts

Electrical power is measured in which units?

Watts.

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  1. Watts ✔
  2. Volts
  3. Watt-hours

Why: Watts measure the rate of electrical energy use. Volts measure electrical potential, while amperes measure current.

Huh, didn't know that: One watt equals one joule of energy used each second.

The dad joke
Knock knock. Who's there? Watt. Watt who? Watt's the unit for power, of course!
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References

Answer: Watts. Watts measure the rate of electrical energy use. Volts measure electrical potential, while amperes measure current.

  1. HamStudy 2026 Technician pool, T5A02 hamstudy.org/browse/E2_2026/T5A
    Electrical power is measured in watts.
    Checked 2026-10-09.

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