Answer: Concentric spheres.
- A Concentric spheres
- B Parallel planes
- C Coaxial cylinders
- D Radial straight lines
Correct answer: A. Concentric spheres
Explanation: Since V = kq/r depends only on distance r, all points at the same r have the same potential, forming concentric spherical surfaces centred on the charge.
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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