Question:
While doing an experiment with potentiometer it was found that the deflection is one-sided and i) the deflection decreased while moving from one end A of the wire to the end B; ii) the deflection increased, while the jockey was moved towards the end B.
(i) Which terminal +ve or –ve of the cell E, is connected at X in case i) and how is E1 related to E?
(ii) Which terminal of the cell E1 is connected at X in case ii)?
Solution:
(i) E is connected to the positive terminal of the cell E1 and it is connected to X. Also, E1 > E
(ii) The negative terminal of the cell E1 is connected to X.