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Sahay Sir > Question Answers > Cengage JEE Mains Physics by B.M Sharma > Chapter 20 - Heating Effects of Current and Instruments > The emf of the driver cell of a potentiometer is 2V, and its internal resistance is negligible. The length of the potentiometer wire is 100cm, and resistance is 5 ohm. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of 0.05mVcm^−1?

The emf of the driver cell of a potentiometer is 2V, and its internal resistance is negligible. The length of the potentiometer wire is 100cm, and resistance is 5 ohm. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of 0.05mVcm^−1?

and its internal resistance is negligible. The length of the potentiometer wire is 100cm and resistance is 5 ohm. How much resistance is to be connected in series with the potentiometer wire to have a potential gradient of 0.05mVcm^−1? The emf of the driver cell of a potentiometer is 2V