Electricity and Circuits

Gap-fill exercise

  
Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1. A switch is made of a .

2. Air is a conductor of electricity.

3. The filament of a bulb is made of .

4. In a cell, chemicals are used to produce the .

5. Pure water is an of electricity however tap water is a of electricity.

6. Conducts are insulators of electricity.

7. Insulators are conductors of electricity.

8. While connecting more than one cell in parallel, the negative terminal is connected with the terminal.

9. Metals are a good of electricity.

10. Non-metals are good of electricity.