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Electricity is classed as a secondary form of energy because it is

  • A.measured in kilowatt hours rather than tonnes
  • B.produced by converting some other form
  • C.consumed in smaller quantities than fuels
  • D.unavailable in nature in any form

Answer: B

Every unit delivered has been made from coal, gas, falling water or sunlight, and the conversion loss belongs to the primary account rather than the secondary one. It is why a country's primary energy consumption exceeds its final consumption substantially.

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