Question

what happens to the balancing length in potentiometer experiment when
1)resistance in series with the driver cell in the primary circuit is increased
2)resistance in series with the galvanometer in the secondary circuit is increased
3)resistance in series with cell in the secondary circuit is increased​

Answer 1

Answer:

hope it helps u

Explanation:

It is because as R1 decreases, the current in the potentiometer circuit increases. Due to it, the potential gradient of potentiometer wire increases. As a result of it the same emf will be balanced on smaller length of potentiometer wire. (ii) When R2 is increased, the balancing length increases.