Explain A Metre Bridge
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The Meter Bridge works on the principle of the Wheatstone Bridge; the Wheatstone Bridge principle is based on the Balanced Bridge Condition.
It works in the principle of the balanced condition of Wheatstone bridge. A potentiometer is an electric device used to measure the emf and internal resistance of a cell, to compare emf of two cells and a potential difference between two points in an electric circuit.
If the length AB is l, then the length BC is ( 100−l ). The specific resistance or resistivity of the material of the wire can be then calculated by using the relation, ρ=Lπr2X ; Where L be the length of the wire and r be its radius.
The meter bridge uses the same principle as the Wheatstone Bridge. It is used to find the unknown Resistance of the Material. The meter bridge consists of a wire of 100 cm, a scale, one unknown Resistor, one known Resistor or a Resistance Box, a Galvanometer and a jockey.
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Meter Bridge is an instrument that is used to find the unknown resistance of a coil or any other material. This bridge works under the principle of Wheatstone bridge. We know that the Wheatstone Bridge is used to measure the unknown resistance connected in a circuit. It consists of four resistors of which two resistors are known Resistors, one variable resistor and one unknown resistor. It also consists of a galvanometer. The bridge has two series-parallel arrangements of resistors
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