Capacitors of 12 μF and 3 μF are joined in series. What is the equivalent capacitance?
Answer and explanation
Correct answer: A. 2.4 μF
- Step 1: For series capacitors , so μF. Answer: 2.4 μF. Why not the others: 15 μF: adds the capacitances, which is the parallel rule. 7.5 μF: takes the average. 36 μF: multiplies without dividing.
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