Basic Qualification · B-005 Basic electronics and theory · B-005-013-008
Potential difference is measured by means of:
- A an ammeter
- B a voltmeter
- C a wattmeter
- D an ohmmeter
Correct answer: B — a voltmeter. From the official ISED question bank, verified word for word.
Why
Potential difference, which is the electrical pressure pushing electrons through a circuit, is measured by a voltmeter. 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.