Electricity Exercises

1. Answer the following questions:

1. What is electric current?
2. What units are used to measure current?
3. Which materials allow current to flow easily?
4. Which materials prevent the flow of electric current?
5. Write five examples of conductor materials and five of insulator materials.
6. What is the symbol of a battery, a cell, a resistance, a lamp, a fuse, a switch, a motor?
7. What units are used to measure resistance and voltage?
8. What symbols are used to represent current, potential difference (voltage), and resistance?