Basic Qualification · B-005 Basic electronics and theory · B-005-005-005
The total resistance of resistors connected in series is:
- A equal to the highest resistance present
- B equal to the lowest resistance present
- C greater than the resistance of any one resistor
- D less than the resistance of any one resistor
Correct answer: C — greater than the resistance of any one resistor. From the official ISED question bank, verified word for word.
Why
When resistors are connected in series, the electric current must flow through each component one after another, so the total opposition to that flow is the sum of all individual resistances. 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.