Answer: Q/6ε₀.
- A Q/6ε₀
- B Q/ε₀
- C 6Q/ε₀
- D exactly zero
Correct answer: A. Q/6ε₀
Explanation: The total flux Q/ε₀ is shared equally among six faces, giving Q/6ε₀ per face.
Field lines always point from positive to negative charge, are denser where the field is stronger, and never cross; an isolated positive charge has lines radiating symmetrically outward, while a dipole's lines curve from the positive to the negative charge.
Concept context
Coulomb's law, electric field, potential, capacitors, Gauss's law.