Basic Qualification · B-005 Basic electronics and theory · B-005-006-004
When two 500-ohm 1-watt resistors are connected in series, the maximum total power that can be dissipated by the resistors is:
- A 0.5 watts
- B 4 watts
- C 2 watts
- D 1 watt
Correct answer: C — 2 watts. From the official ISED question bank, verified word for word.
Why
Each resistor can safely handle one watt of power, so when you connect two of them in series, they share the electrical load. 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.