Question

The potential gradient of an ideal potentiometer wire is
a ) constant
b) increases with increase in the balancing length, decreases with decrease in
the balancing length.
c) very high.
d) varies with the external series resistance.

Answer 1

correct option is a constant.

Answer 2

Answer:

ok

Explanation:

i) If the current in potentiometer is increased it means voltage across it also increased (Ohm's law) potential gradient increases but value of EMF is constant so balancing length should decrease 2) If length of potentiometer be doubled potential 1

gradient decreases as k x (V = constant) but value of EMF is constant so balancing length should increase.

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