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State principle of potentiometre and define its sensitivity. |
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Answer» THE PRINCIPLE OF POTENTIOMETER : THE POTENTIAL DIFFERENCE ACROSS ANY LENGTH OF A WIRE OF UNIFORM CROSS SECTION AND UNIFORM COMPOSITION IS PROPORTIONAL TO ITS LENGTH WHEN A CONSTANT CURRENT FLOWS THROUGH IT.SENSITIVITY : SENSITIVITY OF POTENTIOMETER DEPENDS ON THE VALUE OF POTENTIAL GRADIENT 'K' .SENSITIVITY INCREASES WITH INCREASE OF LENGTH OF POTENTIOMETER WIRE. |
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