Basic Qualification · B-005 Basic electronics and theory · B-005-013-001
How is a voltmeter usually connected to a circuit under test?
- A In quadrature with the circuit
- B In phase with the circuit
- C In parallel with the circuit
- D In series with the circuit
Correct answer: C — In parallel with the circuit. From the official ISED question bank, verified word for word.
Why
A voltmeter measures the electrical pressure difference between two points, so it must be connected across those points without breaking the flow of current. 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.