Electricity

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Across
  1. 3. is measured in ohms
  2. 4. a brown wire
  3. 6. the process used to increase the safety of electrical appliances
  4. 9. a yellow and green wire
Down
  1. 1. contains a thin wire which melts if the current is too high
  2. 2. means side by side
  3. 5. is measured in coulombs
  4. 7. is a circuit breaker which can stop electrocution
  5. 8. a blue wire