1. Aim: To study how different materials affect the flow of electric current.
2. Requirements: copper wire, aluminium wire, glass rod, rubber, electric cell, ammeter, and connecting wires.
3. Procedure:
- Set up the circuit as shown in the figure.
- Connect a copper wire between points A and B, and measure the current using the ammeter.
- Replace the copper wire with an aluminium wire and measure the current.
- Repeat the process with a glass rod and rubber, one at a time, and measure the current each time.
- Record and compare the current values for all the materials.
Electric Circuit
4. Conclusion: Copper and aluminium wires allow current to flow easily, showing they are good conductors. Rubber and glass rods are insulators because they prevent the flow of current. The experiment demonstrates the difference between conductors and insulators in their ability to allow the flow of electricity.
