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6 Written questions

5 Multiple choice questions

  1. 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.
  2. A closed path through which electrons flow.
  3. An electrical circuit where the current flows through more than one path. If one path is interrupted, current will still flow through the other paths.
  4. The unit of electrical energy
  5. A material that does not allow heat or electrons to move through it easily.

5 True/False questions

  1. electrical powerAn 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.

          

  2. dry cellA power of source that acts as an electron pump and generates electric current by a chemical reaction

          

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

          

  4. ohm's lawStates that potential difference=current X resistance, or V (volts)=I (amperes) X R (ohms).

          

  5. static electricityAn 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.

          

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