Q. State the principle of Meter Bridge?
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Principle: Meter bridge is based on the principle of wheat stone bridge. In this bridge one lateral pair of resistances is replaced by a straight wire of length 1 m of uniform cross section. And other pair consist of one known and one unknown resistance.
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The meter bridge principle is based on the Wheatstone Bridge circuit which says that if at any point or length (of a wire), the ratio of two resistances (say R1 and R2) is equal to the ratio of another two resistances (say R3 and R4 where R4 is the unknown resistance), then there shall be no flow of current at that .
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