Work power

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Across
  1. 3. Power equals work divided by (4 letters)
  2. 5. Work is done when this changes (8 letters)
  3. 6. Work divided by time equals (5 letters)
  4. 9. Power is measured in this unit (5 letters)
  5. 10. Another term for energy transfer (4 letters)
  6. 11. Force times distance equals (4 letters)
  7. 12. The ability to do work (6 letters)
Down
  1. 1. The amount of work done in moving a unit charge across two points (8 letters)
  2. 2. Work done when force is applied in this direction (7 letters)
  3. 4. A device that makes work easier (7 letters)
  4. 6. The rate at which work is done (5 letters)
  5. 7. Unit of Power (4 letters)
  6. 8. Unit of Work (4 letters)
  7. 11. Force exerted over a distance (4 letters)