Answer: positive.
- A positive
- B negative
- C neutral
- D very large
Correct answer: A. positive
Explanation: By convention, the field direction is the force on a small positive test charge.
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.