According to the atomic theory of electron movements, electrons move from which to which?

• A. Positive to negative
• B. Negative to positive
• C. Across the same polarity
• D. Random directions

Answer: (B)

Electrons move from negative toward positive because they carry negative charge and are attracted to positive charges. In an electric field, the force on a negative charge points opposite the field direction, guiding the electron toward regions of higher electric potential, i.e., toward the positive side. This is why electron flow is from negative to positive, even though conventional current is described as from positive to negative. The other options don’t fit: a positive-to-negative movement would require a positive charge to move that way; moving across the same polarity would ignore the driving electric field; and random directions ignore the field’s influence.