Wheatstone Bridge, Metre Bridge and Potentiometer Wheatstone Bridge: A Wheatstone bridge is an essential circuit used to isolate and measure resistance i...
Wheatstone Bridge:
A Wheatstone bridge is an essential circuit used to isolate and measure resistance in a circuit. It consists of three resistors connected in a closed loop. When a voltage is applied across the bridge, the resistance between the two outer resistors changes according to the values of the resistors involved. The voltage across the bridge can then be measured using an ammeter. This makes it possible to determine the resistance of a component in the circuit.
Metre Bridge:
A metre bridge is a specialized Wheatstone bridge that is used for more accurate measurements. It uses a reference resistor with known resistance to provide a stable baseline for the bridge. This allows the bridge to measure resistance with greater precision and accuracy.
Potentiometer:
A potentiometer is a device that allows you to control the amount of current flowing through a circuit by varying its resistance. It consists of a metal wire with a variable resistance, which is connected between two terminals. The terminals are connected to a circuit, and the amount of current flowing through the circuit can be measured using an ammeter. By varying the resistance of the wire, the potentiometer allows you to control the current flowing through the circuit and to determine its resistance at different values