Answer: Coulomb.
- A Ampere
- B Coulomb
- C Volt
- D Farad
Correct answer: B. Coulomb
Explanation: The SI unit of electric charge is the Coulomb (C). 1 C = 1 A x 1 s.
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.