Resistance Bridge

A resistance bridge is a type of measuring instrument used to accurately measure the resistance of a component or circuit. It is commonly used in electrical and electronic properties measuring and testing applications.

The resistance bridge consists of a balanced bridge circuit, typically with four arms. One of the arms contains the unknown resistance that needs to be measured, while the other three arms consist of known resistances. The bridge is balanced when the ratio of the known resistances is equal to the ratio of the unknown resistance.

To measure the unknown resistance, the bridge is adjusted until it is balanced. This is typically done by varying the values of the known resistances or by adjusting a variable resistor. Once the bridge is balanced, the value of the unknown resistance can be calculated based on the known resistances and the balance condition.

Resistance bridges are commonly used in laboratory settings for precise resistance measurements. They are often used in applications such as calibrating resistors, measuring the resistance of electronic components, and testing the quality of electrical connections.

In summary, a resistance bridge is a measuring instrument used to accurately measure the resistance of a component or circuit. It is commonly used in electrical and electronic properties measuring and testing applications in laboratory settings.