Answer: attract each other.
- A attract each other
- B repel each other
- C do nothing at all
- D cancel to nothing
Correct answer: A. attract each other
Explanation: A positive and a negative charge attract each other.
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.