How should an inefficient light bulb feel compared to an efficient light bulb?(hotter or colder?)?

Question

explain.

Answer 1

your incandescent bulb [round one]will be hotter to the touch than the CFL[compact fluorescent].The bulb uses a filament that is heated to produce the light.The CFL operates the same as the tube fluorescent and charges the gas in the tube to make it light up

Answer 2

One of the most efficient lights is a lightning bug.  It's cool to the touch.  The more efficient, the cooler anything is.

Answer 3

It depends on the ratio of "lumens" [light] to the amount of "watts"[power].   A  CFL uses about14  watts to achieve the same light as a 40 watt normal bulb, and is reported to last 5+ times as long, although mine seem to have burned out quisker than a normal bulb..  The trade off for the savings is hazordous waste in the CFLs.

Answer 4

An inefficient light bulb would probably be hotter. The more energy the "waste" in the form of heat emissions, the less light they will emit per unit of energy.