Answer: N·m²/C.
- A N·m²/C
- B C/m² only
- C N/C only
- D V only
Correct answer: A. N·m²/C
Explanation: Electric flux has units of N·m²/C (equivalently V·m).
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.