write principal construction of meterbridge and working
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Principle: Meter bridge is based on the principle of wheatstone bridge. In this bridge one lateral pair of resistances is replaced by a straight wire of length 1m of uniform cross section. And other pair consist of one known and one unknown resistance
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It is constructed on the principle based on balanced Wheatstone bridge and is used to find the resistance of an unknown conductor or, to compare the value of two resistances. When the jockey is moved along the wire, there is one position where the galvanometer will show no current.
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