Answer: an integer multiple of e.
- A an integer multiple of e
- B any real value at all
- C always a negative value
- D a value without mass
Correct answer: A. an integer multiple of e
Explanation: Charge occurs in whole-number multiples of the elementary charge e.
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.