Solution:
Balancing length is measured from P.
So
Where Potential gradient
A potentiometer wire PQ of length 1 m is connected to a standard cell E1. Another cell E2 of emf 1.02V is connected with a resistance ‘r’ and switch S (as shown in figure). With switch S open, the null position is obtained at a distance of 49cm from Q. The potential gradient in the potentiometer wire is:
A potentiometer wire PQ of length 1 m is connected to a standard cell E1. Another cell E2 of emf 1.02V is connected with a resistance 'r' and switch S (as shown in figure). With switch S open, the null position is obtained at a distance of 49cm from Q. The potential gradient in the potentiometer wire is:
