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6 Written questions

5 Multiple choice questions

  1. States that potential difference=current X resistance, or V (volts)=I (amperes) X R (ohms).
  2. A closed path through which electrons flow.
  3. The difference in electric potential energy between two different points; measured in volts (V).
  4. A power source that generates electric current by a chemical reaction
  5. A power of source that acts as an electron pump and generates electric current by a chemical reaction

5 True/False questions

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

          

  2. parallel circuitAn 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. electroscopeA device containing two suspended metal leaves in a jar that move apart when charged; used to detect the presence of electric charges.

          

  4. conductorA material that allows electrons to move easily through it.

          

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