Across
- 1. 400000 of these in the national grid
- 4. cables are made of this because it is a light metal
- 5. comes from coal power stations
- 6. direct current
- 7. hold up cables
- 8. used to make electricity
- 10. 230 volts in our house is ..... than higher voltages
- 12. cables lose less of this if at high voltages and low current
Down
- 2. can change voltage up or down
- 3. renewable energy source that uses big turbines
- 9. a country that uses 110 volts in homes
- 11. alternating current