Innovation and invention

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Across
  1. 6. Unit of frequency
  2. 7. Unit of electrical resistance
  3. 9. What is AC short for?
  4. 11. Who showed that electricity could travel in copper wires?
  5. 12. First name of inventor known for his work on improving the steam engine
  6. 13. Unit of electrical power
Down
  1. 1. English word for "strømførende"
  2. 2. Unit of charge
  3. 3. Invention by Allessandro Volta
  4. 4. What was Hertz the first person to broadcast and recieve?
  5. 5. Unit of electric current
  6. 8. Unit of electric potential
  7. 10. Car named by famous physicist