Answer: 0.60 N.
- A 0.60 N
- B 0.30 N
- C 1.80 N
- D 6.00 N
Correct answer: A. 0.60 N
Explanation: Using F = kq1q2/r2, F = 9 × 109 × 2 × 10-6 × 3 × 10-6/0.32 = 0.60 N.
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.