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6 Written questions

5 Multiple choice questions

  1. The rate at which electrical energy is converted to another form of energy; this is expressed in watts (W) or kilowatts (kW).
  2. 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.
  3. A material that does not allow heat or electrons to move through it easily.
  4. A power of source that acts as an electron pump and generates electric current by a chemical reaction
  5. A device containing two suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.

5 True/False questions

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

          

  2. kilowatt-hourA material that does not allow heat or electrons to move through it easily.

          

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

          

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

          

  5. conductorA material that does not allow heat or electrons to move through it easily.