Basic Qualification · B-005 Basic electronics and theory · B-005-003-001
What term describes the rate at which electrical energy is used?
- A Voltage
- B Resistance
- C Power
- D Current
Correct answer: C — Power. From the official ISED question bank, verified word for word.
Why
Power is the correct term because it measures how fast electrical energy is being used or converted into work, much like how a light bulb's brightness depends on the rate of energy consumption. 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.