2006-10-02 19:59:49 · 7 answers · asked by Anonymous in Science & Mathematics ➔ Physics
Insulation is used to restrict the current flow, so that all of it passes through the filament for the purpose of heating it to produce light. This includes the glass bulb, which keeps the current flow away from whatever the bulb might touch, and also keeps the inert gases in and the oxygen out. It also is a thermal insulator, which reduces the amount of heat that leaves the bulb by conduction.
2006-10-02 20:51:30 · answer #1 · answered by Frank N 7 · 1⤊ 0⤋
Tungeston is used as a insulator in light bulb.
2006-10-03 03:02:12 · answer #2 · answered by shani s 1 · 0⤊ 2⤋
there is no "insulator" in a bulb. it works buy electricity flowing through the fillimant which gets hot due to heat. then is also in a vacuum to reduce heat on the glass and to lengthen the time it will last until it "burns" out
2006-10-03 03:05:03 · answer #3 · answered by aklchris2000 2 · 0⤊ 1⤋
To isolate the two wires connected to the element. Otherwise the current might short out between the wires causing a blown fuse.
2006-10-03 03:07:50 · answer #4 · answered by highway35stomper 2 · 0⤊ 0⤋
what kind of light bulb?
www.wikipedia.org for your answer.
good luck
2006-10-03 03:08:58 · answer #5 · answered by getit 4 · 0⤊ 0⤋
tungsten filament,,,,,,,becoz its posses high melting point
2006-10-03 03:02:52 · answer #6 · answered by Anonymous · 0⤊ 1⤋
glass.gas
2006-10-03 03:02:15 · answer #7 · answered by arockiadossdelezia 1 · 0⤊ 0⤋