Two capacitors of and are connected in series. What is the equivalent capacitance (in F)?
Answer and explanation
Correct answer: D. 3
- Step 1: For two capacitors in series, the reciprocal of equivalent capacitance equals the sum of reciprocals: .
- Step 2: Substitute and : .
- Step 3: Dividing product by sum gives .
Answer
3.
Why not the others: 16 adds capacitances directly (), which applies to parallel combinations; 48 computes product without dividing by sum; 8 computes the simple arithmetic average.
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