what is the statement of wheatstone bridge principle
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A wheat stone is a electrical circuit used to measure the an unknown electrical resistance by balancing two legs of a bridge circuit ,one leg which includes the unknown component.
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Wheatstone Bridge Principle states the if four resistance P, Q, R and S are arranged to form a bridge as shown in figure with a cell E and one key K1 between the point A and C and galvanometer G and tapping key K2 between the points B and D, closing K1 first and K2 later on, if the galvanometer shows no deflection then bridge is balanced.
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