When you get into electrochemistry, the answer becomes complicated. Positively charged molecules move too, and in semiconductors there’s such thing as a ‘hole’ - an absence of electron in a densely packed electron field - which carries charge as if it were a real particle.
When you get into electrochemistry, the answer becomes complicated. Positively charged molecules move too, and in semiconductors there’s such thing as a ‘hole’ - an absence of electron in a densely packed electron field - which carries charge as if it were a real particle.