Answer: 2:1.
- A 1:2
- B 1:1
- C 2:1
- D 4:1
Correct answer: C. 2:1
Explanation: Axial field = 2kp/r³ and equatorial field = kp/r³, so the ratio is 2:1.
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.