Answer: 4 F.
- A 4 µF
- B 2 µF
- C 6 µF
- D 10 µF
Correct answer: A. 4 µF
Explanation: Series pair: (4×4)/(4+4) = 2 µF. In parallel with 2 µF: 2 + 2 = 4 µF.
Field lines (radial) and equipotential lines (concentric circles) of a point charge. Equipotential surfaces are always perpendicular to the field lines. Image: Sjlegg, Public Domain, via Wikimedia Commons.
Concept context
Electric potential, equipotential surfaces, potential energy of charge systems, conductors, dielectrics, capacitors, combinations, and energy storage.
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