Basic Qualification · B-005 Basic electronics and theory · B-005-006-001
Why would a large size resistor be used instead of a smaller one of the same resistance?
- A For less impedance in the circuit
- B For greater power dissipation
- C For better response time
- D For higher conductance
Correct answer: B — For greater power dissipation. From the official ISED question bank, verified word for word.
Why
A larger resistor can handle more heat because its bigger body spreads out the energy it turns into warmth, preventing it from burning up when the circuit uses significant power. 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.