Two capacitors of and are connected in series. What is the equivalent capacitance (in F)?
Answer and explanation
Correct answer: D. 2
- Step 1: For two capacitors in series, the reciprocal of equivalent capacitance equals the sum of reciprocals: .
- Step 2: Substitute and : .
- Step 3: Evaluate equivalent capacitance: .
Answer
2.
Why not the others: The alternative options (9/2, 3, 9) result from neglecting fundamental physical conservation laws, misapplying physical constants, or arithmetic calculation slips.
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