1. Device used for domestic or industrial purposes

1. Device used to allow different plugs or sockets to be compatible

2. Metal projections on a plug that fit into a socket

3. To cover or surround with a material that prevents the flow of electricity

4. Process of replenishing a battery's energy

5. Point of connection for an electrical conductor

6. Measure of electrical potential difference

7. Unauthorized connection of wires causing a low-resistance path

8. Point on a wall where a plug can be inserted

9. Device that controls the flow of electricity

10. Wire that carries current from the source

11. Not requiring a physical connection

12. Connection to the earth used for safety purposes

13. Unit of electric current

14. Ability to do work or produce heat

15. Connects electrical devices to a power source

16. Sudden increase in voltage

17. Flexible insulated cable

18. Wire that carries current back to the source

19. Rate at which electrical energy is transferred