Basic Qualification · B-005 Basic electronics and theory · B-005-013-004
What is the correct instrument to measure the final power amplifier current?
- A An ohmmeter
- B A wattmeter
- C A voltmeter
- D An ammeter
Correct answer: D — An ammeter. From the official ISED question bank, verified word for word.
Why
An ammeter is the right tool because it measures electric current, which is the flow of electrons through a circuit, and the question specifically asks for the current drawn by the final power amplifier. 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.