Question

Which wire is used in the rheostat?

Answer 1

1. A thin carbon film or coil of wire is used to make the rheostat. They are mostly wire wounds.
2. Rheostats are also referred to as variable wire wound resistors. These are usually made by winding Nichrome wire around a ceramic core.
3. With one lead attached to the wiper and the other to one end of the resistance track, rheostats are two-terminal devices.
4. The resistance of the rheostat, a variable resistor, can be altered to alter the amount of current flowing through a circuit.