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6 Written questions

5 Multiple choice questions

  1. A device containing two suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.
  2. The unit of electrical energy
  3. States that potential difference=current X resistance, or V (volts)=I (amperes) X R (ohms).
  4. A power source that generates electric current by a chemical reaction
  5. The flow of electrons through a wire or any conductor; measured in a amperes (A) with an ammeter.

5 True/False questions

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

          

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

          

  3. dry cellA power source that generates electric current by a chemical reaction

          

  4. potential differenceThe difference in electric potential energy between two different points; measured in volts (V).

          

  5. insulatorA material that allows electrons to move easily through it.