Technician A says rheostats have three connections, one at each end of the resistance and one connection to a sliding contact with the resistor. Technician B says potentiometers have two connections, one at the power end of the resistance and one connected to a sliding contact with the resistor. Who is correct?

Question

Quizplus · Accepted Answer

A rheostat typically has two connections: one at one end of the resistance and one connected to a sliding contact. A potentiometer has three connections: one at each end of the resistance and one connected to a sliding contact.

Technician a Says Rheostats Have Three Connections, One at Each