Across
- 2. the unit for resistance
- 3. measures the current in a circuit
- 4. a complete loop round which electricity flows
- 6. a material that does let electricity through
- 9. a material that does not let electricity through
- 11. a single looped circuit
- 13. two or more cells
- 14. turns the electricity on or off
- 16. the unit for current
- 18. how much energy is transferred through a component
- 19. a good material to insulate wires
- 21. the subatomic particle that moves round a circuit
Down
- 1. also called voltage
- 5. a good material to make wires from
- 7. the flow of electrons round a circuit
- 8. how hard it is for the electrons to move
- 10. the circuit has branches
- 12. measures voltage
- 15. lights up when current flows
- 17. the units for potential difference
- 20. a source of electricity