Electricity Revision Crossword

1. Device that only lets electricity flow through it one way.
4. A component made of a thin wire that protects a circuit from electrical fire.
7. Does not conduct electricity well and has a very high resistance.
9. A component which changes chemical potential energy to electrical energy.
10. The measurement of how hard it is for electricity to pass through a wire.
13. Thin piece of wire inside a lamp.
14. resistor Component with a resistance that can be manually changed.
18. A component which limits the flow of a current by converting electrical energy into heat energy.
20. Flow in a circuit to make a current. Negatively charged particles.
22. A device which is used to measure the voltage across a component.
23. Unit of power.

2. current Current that always flows in the same direction.
3. property of matter that produces all electrical effects.
5. A component in a circuit. When closed the current can flow.
6. Unit of electric charge.
8. current Electrical current that repeatedly reverses its direction, like mains electricity.
11. Resistor that depends on temperature.
12. Describes a circuit which the current splits into more than one path.
15. Instrument that measures electrical current in amps.
16. Amount of energy transferred every second.
17. More than one cell.
19. Describes a circuit in which the current travels along one path through every component.
21. Unit of resistance.