Across
- 3. This is the rate of energy transfer.
- 6. _________ current is where the current reverses its direction of flow.
- 10. _______ current flows in one direction only.
- 12. Energy equals potential difference multiplied by ________.
- 14. When charge flows through a resistor, it gets _______.
Down
- 1. The colour of the live wire is ________
- 2. The colour of the neutral wire is ________.
- 4. This is the unit of power.
- 5. The earth wire must be connected to the metal _______.
- 7. _________ wire is held at around zero volts.
- 8. ________ hertz is the frequency of mains in the UK.
- 9. _______ wire has the voltage alternatively positive and negative.
- 11. All mains operated appliances must have this wire.
- 13. The colour of the earth wire in yellow and ________.