Basic Qualification · B-005 Basic electronics and theory · B-005-013-006
When measuring current drawn from a DC power supply, what does the ammeter placed in the circuit appear as?
- A An additional load
- B A high value resistance
- C A low value resistance
- D A perfect conductor
Correct answer: C — A low value resistance. From the official ISED question bank, verified word for word.
Why
An ammeter must be placed directly in the path of the current, so it needs to let electricity flow through it without blocking the way. 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.