Basic Qualification · B-005 Basic electronics and theory · B-005-005-004
Two 1000-ohm resistors are connected in parallel across a 12-volt battery. What is the total current?
- A60 milliamperes
- B120 milliamperes
- C24 milliamperes
- D12 milliamperes
Correct answer: C — 24 milliamperes. From the official ISED question bank, verified word for word.
Why
With two identical 1000-ohm resistors in parallel, the total resistance drops to 500 ohms because the current has two equal paths to flow through. 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