👉 Rheostats, also known as variable resistor or variable resistance, are electronic devices that convert electrical power into mechanical energy. They consist of a series of resistors arranged in a specific sequence and connected to a voltage source. In the context of electronics, a rheostat is typically used in circuits where there is a need for precise control over the output voltage (or current) without having to change the input voltage or current manually. It can be used in applications such as power amplifiers,
