A Wheatstone bridge is used as a variable resistance sensor.

Question

Quizplus · Accepted Answer

A Wheatstone bridge is a type of electrical circuit that can be used to measure an unknown resistance by balancing two legs of the bridge against each other. In this application, the Wheatstone bridge is used as a variable resistance sensor by connecting the unknown resistance to one of the legs of the bridge. When the bridge is balanced, the voltage across the unknown resistance is zero, and the resistance can be calculated from the values of the other resistors in the bridge.

A Wheatstone Bridge Is Used as a Variable Resistance Sensor