Question

The following figure shows a potentiometer AB connector to driver cell of variable voltage 'V'.
What happens to the potential gradient along the potentiometer wire :
(1) when the driver voltage decreases.
(2) when the potentiometer wire is replaced by another wire of same length but greater thickness.
(3) when the potentiometer wire is replaced by another wire of same thickness but greater length?
(4) when a resistance 1 ohm in series with driver cell. Give reason to support your answer. ​

Answer 1

Answer:

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