1. To determine resistance per cm of given wire by plotting a graph of potential difference versus current. 

2. To find resistance of a given wire using meter-bridge and hence determine the specific resistance of its material. 

3. To verify law of combination (series and parallel) of resistance using a meter-bridge. 

4. To compare the emf of two primary cells using potentiometer. 

5. To determine the internal resistance of given primary cells using potentiometer. 

6. To determine resistance of a galvanometer by half-deflection method and to find its figure of merit. 

7. Given the resistance and figure of merit of a galvanometer, convert it into an ammeter and voltmeter of desired range and verify the same. 

8. To find the frequency of ac mains by using sonometer.