Question

Which of the following correctly defines the drift motion of electrons?

Options

• Flow of charge through a conductor

• Random collision of electrons with fixed ions only

• Irregular motion of electrons due to thermal energy

• Net-directed motion of electrons under an electric field

Answer 1

Drift motion is the net-directed motion of electrons under an electric field. This is distinct from random motion, which is the irregular motion of electrons due to thermal energy even without a field.