Which statement is NOT true?
A) A rheostat is a two terminal device
B) A potentiometer can be used as a rheostat.
C) A rheostat can be used as a potentiometer
D) A potentiometer is a three terminal device.

Question

Quizplus · Accepted Answer

A rheostat, being a two-terminal device, is primarily designed for controlling current. It cannot be effectively used as a potentiometer, which is a three-terminal device used for varying voltage. A potentiometer can function as a rheostat by using only two of its terminals, but the reverse is not practical due to the inherent design and function differences between the two devices.

Which Statement Is NOT True