Ace the 2025 AWWA ABC Water Distribution Grades 1 & 2 – Dive into Success!

An analog meter with a needle is indeed referred to as a D'Arsonval meter. This type of meter operates on the principle of electromagnetic deflection, where the current flowing through a coil creates a magnetic field that causes the needle to move against a calibrated scale. This provides a visual indication of the measurement being taken, such as voltage, current, or resistance.

In contrast, a digital multimeter displays its readings on a digital screen, making it fundamentally different from the analog type. A clamp meter, while used to measure current, typically has jaws that clamp around a conductor and displays the measurement digitally or via a needle in some older models. Solid state meters use electronic components and circuits for measurement, rather than relying on the mechanical movement of a needle.

Thus, the D'Arsonval meter stands out as the key example of an analog meter with a needle that accurately indicates varying electrical measurements.