Which of the following modes is the most economical method of transmitting electrical power over…

Physics WAEC 2012

Which of the following modes is the most economical method of transmitting electrical power over long distances?

  • alternating current at low voltage and high current
  • alternating current at high voltage and high current
  • alternating current at high voltage and low current checkmark
  • direct current at low voltage and high current

The correct answer is: C

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