Basic Qualification · B-005 Basic electronics and theory · B-005-003-006
Power is expressed in:
- A watts
- B volts
- C amperes
- D ohms
Correct answer: A — watts. From the official ISED question bank, verified word for word.
Why
Power measures how fast electrical energy is used or produced, and the unit for this rate is the watt. The full explanation — and one for every question — is in Pro.
Practise this section
The theory: Ohm's law, power, series and parallel circuits, AC and DC, frequency and wavelength, decibels, and the metric prefixes the exam leans on.