WAEC Physics 2014 Objective — Question 41
Question 41 of 50 from the West African Examinations Council (WAEC) Physics 2014 Objective paper, with the correct answer and a full explanation.
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A 15µF capacitor is connected to a 240V, 50Hz a.c. source. Calculate the reactance of the capacitor. [π=3.142]
- A. 16 Ω
- B. 68 Ω
- C. 106 Ω
- D. 212 ΩCorrect
Explanation
Xc = 1/(2πfC) = 1/(2×3.142×50×15×10⁻⁶) ≈ 212Ω.
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