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In d.c. potentiometermeasurements - a secondreading is often taken afterreversing the polarities of thed.c. supply and the unknownvoltage - and the average of thetwo reading is taken. This iswith a view to eliminate theeffects of

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In d.c. potentiometermeasurements - a secondreading is often taken afterreversing the polarities of thed.c. supply and the unknownvoltage - and the average of thetwo reading is taken. This iswith a view to eliminate theeffects of






 
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