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6 Written questions

5 Multiple choice questions

  1. The difference in electric potential energy between two different points; measured in volts (V).
  2. A device containing two suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.
  3. A material that allows electrons to move easily through it.
  4. A power of source that acts as an electron pump and generates electric current by a chemical reaction
  5. An area surrounding an electron that exerts a force on anything nearby with an electric charge; is strongest nearest the electron and weakens with a distance.

5 True/False questions

  1. circuitA closed path through which electrons flow.


  2. series circuitAn electrical circuit where the current has only one path. If the path is interrupted in any point, it stops current flow in the entire circuit.


  3. currentThe flow of electrons through a wire or any conductor; measured in a amperes (A) with an ammeter.


  4. resistanceThe force exerted by a machine to overcome resistance to gravity or friction


  5. electrical powerThe rate at which electrical energy is converted to another form of energy; this is expressed in watts (W) or kilowatts (kW).


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