The Potentiometer-Internal resistance of a cell
1)The resistance offered by the electrolyte between the two electrodes of the cell is:

2)What is the shape of graph between internal resistance in X axis and external resistance in Y axis?

3)Which material is suitable for potentiometer wire?

4)Which one of the following is a scalar quantity?

5)What happens to the internal resistance of a cell when we increase the external resistance?

6)What is the device used to measure the potential difference?

7)What is potential gradient?

8)Why is a potentiometer preferred to a voltmeter to measure voltage in a circuit?

9)Which of the following is an example for secondary cell?

10)What is an example for a primary cell?