Physics

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Across
  1. 1. Closed path for the flow of current
  2. 3. Significant invention of Thomas Alva Edision
  3. 4. SI unit of power
  4. 7. A device that measures current in a circuit.
Down
  1. 2. Material that allows current to pass through it
  2. 5. SI unit of electric current
  3. 6. current cannot pass through if it is open