Wheatstone Bridge
Q1: What is Wheatstone Bridge?
Answer:
A circuit is designed for the measurement of an unknown resistance by connecting three known and one unknown resistance in the form of a quadrilateral, and a voltage is applied to the opposite corners of the quadrilateral. This is known as the Wheatstone Bridge.
Q2: What is the principle of Wheatstone Bridge?
Answer:
The Wheatstone Bridge works on the principle of null deflection, where the ratio of the resistance is equal and no current flows through the galvanometer.
Q3: What is the balanced condition of the Wheatstone Bridge?
Answer:
When no current flows through the galvanometer and it shows no deflection, the Wheatstone Bridge is said to be in a balanced condition. This condition is also called the equilibrium condition as well.
Q4: When is Wheatstone Bridge most sensitive?
Answer:
When all four resistances in the wheatstone bridge are almost equal, then the wheatstone bridge is said to be most sensitive.
Q5: Which instrument is used as a null detector in Wheatstone Bridge?
Answer:
The galvanometer is used as a null detector in the Wheatstone Bridge, where a null point is the condition where no current passes through the circuit where the galvanometer is connected.
Wheatstone Bridge
Wheatstone bridge is a device that is used to find the resistance of a conductor, in 1842, scientist Wheatstone proposed a theory, which is called the principle of Wheatstone bridge after his name. we can prove or establish the formula for Wheatstone by using Kirchhoff laws. Wheatstone bridge is simply an electric circuit used to measure an unknown electric resistance by balancing two-point of a bridge. Let’s get started!
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