Answer: 1000 N·m²/C.
- A 250 N·m²/C
- B 500 N·m²/C
- C 1000 N·m²/C
- D 2000 N·m²/C
Correct answer: C. 1000 N·m²/C
Explanation: Φ = EA cos0° = 2×10³·0.5 = 1000 N·m²/C.
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.