What is used to ignite the arc in a florescent light?

A) spark
B) heating element
C) ballast resistor
D) terminating resistor

Florescent Light

An energy-efficient lighting device using mercury vapor to emit UV light, which then causes a phosphorescent coating to glow.

Ballast Resistor

An electrical resistor used to limit the current flowing through circuits, often found in ignition systems to protect components from overcurrent.