Answer: pE sinθ.
- A pE sinθ
- B pE cosθ
- C simply pE
- D p divided by E
Correct answer: A. pE sinθ
Explanation: τ = p × E = pE sinθ.
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.