Electrons that are energized to glow in the filament of a common ac lamp are
A)supplied by a wall outlet.
B)supplied by a wall outlet, which in turn are supplied by your power company.
C)electrons already in the filament.
D)none of the above

Question

Quizplus · Accepted Answer

The electrons that glow in the filament of a common AC lamp are actually the electrons already present in the filament itself. When an electric current passes through the filament, it causes these electrons to become excited and release energy in the form of light. The electricity supplied by the wall outlet (and ultimately the power company) provides the energy needed to excite these electrons, but the electrons that actually glow are those already within the filament material.

Electrons That Are Energized to Glow in the Filament of a Common