Answer: Q/ε₀.
- A Q/ε₀
- B Qε₀
- C just Q
- D ε₀/Q
Correct answer: A. Q/ε₀
Explanation: The net flux equals the enclosed charge divided by ε₀.
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.