Answer: decreases.
- A decreases
- B increases
- C stays the same
- D falls to zero
Correct answer: A. decreases
Explanation: The dielectric reduces the force by the factor of its dielectric constant K.
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.