Across
- 2. found at the centre of an atom
- 4. a negatively charged particle
- 5. a battery which cannot be re-charged
- 8. a battery which can be recharged
- 9. a circuit with only one path
- 11. a circuit with more than one path
- 13. when two like charges are close to each other
- 14. a good conductor of electricity
- 16. a type of energy
- 17. when two unlike charges are close to each other
- 18. units of resistance
- 19. instrument used to measure voltage
- 20. a flow of electrons
Down
- 1. two or more cells connected together
- 3. a material which allows electrons to pass through it
- 6. units of current
- 7. a poor conductor of electricity
- 10. supplies electrical energy
- 12. opposition to the flow of electrons
- 15. units of voltage
- 17. instrument used to measure current
- 19. a measure of the energy supplied by the battery