P5 Electricity in the home

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Across
  1. 4. Wire - The wire in a mains cable used to connect the metal case of an appliance to earth.
  2. 6. transformers - electrical device used to step-down the size of an alternating potential difference
  3. 8. Current - Electric current in a circuit that is in one direction only
  4. 9. - A device used to display the shape of an electrical wave.
  5. 10. - A plug has an insulates case and is used to connect the cable from an appliance to a socket
Down
  1. 1. plug - a three-pin plug has a live pin, a neutral pin and an earth pin
  2. 2. - A fuse contains a thin wire that melts and cuts the current off if too much current.
  3. 3. Current - Electric in a circuit that repeatedly its direction.
  4. 5. Wire - the mains wire that has a voltage that alternates in voltage (between +325 V and -325 V in Europe)
  5. 6. Transformers - electrical device used to step-up the size of an alternating potential difference
  6. 7. Wire - The wire of a mains circuit that is earthed at the local substation so its potential is close to zero.