Which type of resistor is specifically designed to change the potential difference in a circuit?

Understand the Problem

The question is asking which type of component is used to change the potential difference (voltage) in a circuit. The options provided are different electronic components, and the objective is to identify the correct one.

More Information

A potentiometer is a three-terminal device that can be used to control voltage levels by adjusting the resistance. It's commonly used in devices like volume controls, tuning circuits, and as a means to adjust or divide voltage.

Tips

A common mistake is confusing between fixed resistors and potentiometers; fixed resistors do not allow adjustment of resistance once set.

Sources

• Resistor & Types of Resistors – Fixed, Variable, Linear & Non-Linear - electricaltechnology.org
• Variable Resistors (Potentiometers) - CYtech Systems - cytechsystems.com