Question

What is a rheostat?

Answer 1

Rheostat:

1. A rheostat is an electrical device that is used in many applications that require changing the current or resistance in an electric circuit.
2. Sir Charles, an English scientist, named this device "Rheostat" from the Greek words "rheos" and "status" (meaning a current controlling device).
3. Rheostats are two-lead devices, with one lead connected to the wiper and the other to one end of the resistance track.
4. A rheostat is a variable resistor whose resistance can be changed to alter the amount of current flowing through a circuit.