Which of the following materials is commonly used for the wire in a potentiometer?
Correct Answer: Constantan
- Step 1: Understand what a potentiometer is. A potentiometer is a device that measures voltage or resistance.
- Step 2: Learn about the materials used in potentiometers. The wire in a potentiometer needs to have stable resistance.
- Step 3: Identify common materials used for the wire. One of the materials often used is called constantan.
- Step 4: Know why constantan is used. It has a stable resistance even when the temperature changes, making it reliable for measurements.
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