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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. The force exerted by a machine to overcome resistance to gravity or friction
  3. A material that does not allow heat or electrons to move through it easily.
  4. 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.
  5. An 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.

5 True/False questions

  1. currentA closed path through which electrons flow.

          

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

          

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

          

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

          

  5. static electricityAn electrical circuit where the current flows through more than one path. If one path is interrupted, current will still flow through the other paths.