WAEC Physics 2018 Objective — Question 43
Question 43 of 50 from the West African Examinations Council (WAEC) Physics 2018 Objective paper, with the correct answer and a full explanation.
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In which of the following activities is an induction coil not useful?
- A. Investigation of high voltages
- B. Study of electric discharge
- C. Operation of X-ray tubes
- D. A.C. power transmissionCorrect
Explanation
Induction coils are used to generate high voltages for sparks, discharge tubes and X-ray tubes, but power transmission uses transformers, not induction coils.
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