Define potentiometer.

State the principle of potentiometer.

Describe the construction of potentiometer.

State and explain principle of potentiometer.

When null point is obtained in the potentiometer the current is drawn from

When the balance point is obtained in the potentiometer, a current is drawn from?

Describe with the help of neat diagram how will you determine the internal resistance of a cell by using potentiometer. Derive the necessary formula.

In an experiment with a potentiometer V_B=10 V , R is adjusted to be 50 Omega as shown in figure. A student wanting to measure voltage E_1 of a battery (approx. 8 V) finds no null point possible. He then diminishes R to 10 Omega and is able to locate the null point on the last (4th) segment of potentiometer.Find the resistance of the potentiometer wire and potential drop per unit length across the wire in the second case.

Define proton.

The null point of a potentiometer wire will shift beyond the potentiometer wire if

The material of wire of potentiometer is