WAEC Physics 2012 Objective — Question 45
Question 45 of 50 from the West African Examinations Council (WAEC) Physics 2012 Objective paper, with the correct answer and a full explanation.
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Which of the following practices will lead to losses in electrical power transmission?
- A. A. Using transmission cables of large diameter
- B. B. Transmitting at high voltage
- C. C. Transmitting at relatively low voltage and high currentCorrect
- D. D. Using a step-up transformer at the production end
Explanation
Transmitting electrical power at low voltage and high current increases resistive (I²R) losses in the cables, leading to power losses.
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