Answer: Becomes 1/K times.
- A Becomes K times
- B Remains the same
- C Becomes 1/K times
- D Becomes K<sup>2</sup> times
Correct answer: C. Becomes 1/K times
Explanation: Isolated capacitor keeps Q constant. C becomes K times, and V = Q/C, so V decreases to V/K, i.e. 1/K times the original.
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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