Wheatstone Bridge:

Wheatstone Bridge is a circuit that is used to measure the unknown resistance accurately. It was invented by Samuel Hunter Christie and later improved by Sir Charles Wheatstone.

Working Principle:

Wheatstone Bridge works on the principle of balancing the resistance in the bridge circuit. It consists of four resistors, out of which two are known and two are unknown. The unknown resistance is measured by balancing the bridge circuit.

Components:

The Wheatstone Bridge circuit consists of the following components:
- Four resistors
- Power supply
- Galvanometer
- Jockey
- Connecting wires

Application:

Wheatstone Bridge is used in various applications such as:
- Measuring the resistance of a conductor
- Measuring the resistance of a thermistor
- Measuring the resistance of a strain gauge
- Measuring the resistance of a photoresistor
- Measuring the resistance of a potentiometer

Advantages:

- It provides accurate measurements of resistance.
- The bridge circuit can be used to measure various types of resistances.

Disadvantages:

- The Wheatstone Bridge circuit is sensitive to temperature changes.
- It requires a power supply to operate.

Conclusion:

Wheatstone Bridge is an important circuit used to measure resistances accurately. It has various applications and provides accurate measurements of resistances. However, it is sensitive to temperature changes and requires a power supply to operate.