Basic Qualification · B-005 Basic electronics and theory · B-005-006-005
When two 500-ohm 1-watt resistors are connected in parallel, they can dissipate a maximum total power of:
- A 2 watts
- B 0.5 watts
- C 1 watt
- D 4 watts
Correct answer: A — 2 watts. From the official ISED question bank, verified word for word.
Why
When two identical resistors are wired in parallel, each one shares the load equally, so the total power they can handle is simply the sum of their individual ratings. 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.