A Wheatstone bridge can be defined as an electrical circuit in which an unknown electrical resistance can be measured with the help of two different legs belonging to a bridge circuit. Of these two legs of the bridge circuit, one contains only known resistances and another contains the unknown resistance along with some known resistances. The primary advantage offered by a Wheatstone bridge is that the circuit of the Wheatstone bridge can provide very accurate measurements of the unknown resistance. It is important to note that the operation of the Wheatstone bridge is quite similar to that of the potentiometer.
