Answer: N/C.
- A N/C
- B C/N
- C N·C
- D C·m
Correct answer: A. N/C
Explanation: Electric field is force per unit charge, so its unit is newton per coulomb.
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.