If the current flowing in the wire of the potentiometer be decreased, what will be effect on the position of zero deflection in potentiometer ? Explain.

If the emf of the driving cell be decreased, what will be effect on the position of zero deflection in a potentiometer ? Explain .

If the e.m.f. of a driving cell be decreased. What will be effect on the positions of zero deflection in a potentionmeter? Explain.

If the length of the wire be (i) doubled and (ii) halved, what will be effect on the position of zero deflection in a potentiometer ? Explian

The wire of potentiometer is made of

The wire of potentiometer is made of

Can we use copper wire as potentiometer wire ? Explain.

State and explain principle of potentiometer.

What is the unit of potential-gradient ? If the potential gradient along the potentiometer wire be decreased, will the zero-deflection position be obtained at longer length or shorter length ?