Basic Qualification · B-005 Basic electronics and theory · B-005-009-003
If two equal-value capacitors are connected in series, what is their total capacitance?
- AHalf the value of either capacitor
- BTwice the value of one capacitor
- CThe value of one capacitor times 4
- DThe value of one capacitor divided by 4
Correct answer: A — Half the value of either capacitor. From the official ISED question bank, verified word for word.
Why
When two equal capacitors are connected in series, the total capacitance becomes half the value of either capacitor because the effective distance between the plates doubles, making it harder to store charge. The full explanation — and one for every question — is in Pro.
Practise this section
Basic electronics and theory is section B-005 of the Basic exam: 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.
Drill B-005 — free, no account