Answer: F/q.
- A F/q
- B F x q
- C q/F
- D F + q
Correct answer: A. F/q
Explanation: E = F/q. Electric field is force per unit positive test 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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