Electrician and electrical instructor here... That's not a rheostat, it's a potentiometer. A rheostat has 2 leads, a potentiometer has three. A potentiometer is used adjust and divide voltages, while a Rheostat is used to vary the amount of resistance in a circuit. Certainly, one can use a "pot" as a rheostat by not connecting the one of the outside leads, but it's still a pot.
Electrician and electrical instructor here... That's not a rheostat, it's a potentiometer.
A rheostat has 2 leads, a potentiometer has three. A potentiometer is used adjust and divide voltages, while a Rheostat is used to vary the amount of resistance in a circuit.
Certainly, one can use a "pot" as a rheostat by not connecting the one of the outside leads, but it's still a pot.