Basic Qualification · B-005 Basic electronics and theory · B-005-004-008
A 30-ohm resistor is connected across a 6-volt battery. What current does it draw?
- A 2 amperes
- B 0.5 amperes
- C 0.005 amperes
- D 0.2 amperes
Correct answer: D — 0.2 amperes. From the official ISED question bank, verified word for word.
Why
To find the current, you divide the voltage by the resistance, which means taking 6 volts and dividing by 30 ohms. 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.