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  • While doing an experiment with potentiometer (Figure ) 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 doing an experiment with potentiometer (Figure ) 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 +or –ve of the cellE_{1}, is connected at X in case (i) and how is E_{1} related to E?
(ii) Which terminal of the cell E_{1} is connected at X in case (ii)?

 

Answers (1)

i) As jockey moves closer to B, the galvanometer potential difference decreases. This requires the positive terminal of E_{1} to be at X.

ii) Exactly opposite to (i), at X E_{1}^{'}s negative terminal is connected.

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