When a common fluorescent lamp is lit, the mercury vapor inside is actually in a
A)gaseous phase.
B)liquid phase.
C)plasma phase.
D)solid phase.
E)none of the above

Question

Quizplus · Accepted Answer

When a common fluorescent lamp is lit, the mercury vapor inside is ionized by the electrical current passing through it, creating a plasma phase. This plasma produces ultraviolet radiation which causes the phosphor coating on the inside of the tube to fluoresce and emit visible light.

When a Common Fluorescent Lamp Is Lit, the Mercury Vapor