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What are the three ways to determine if a light bulb has burned out?

Question #32087. Asked by Socrates.
Last updated Oct 18 2016.

kerry8888
Answer has 10 votes
Currently Best Answer
kerry8888
20 year member
311 replies

Answer has 10 votes.

Currently voted the best answer.
how to tell if a light bulb is blown:

1 it doesnt work in the light socket.

2 it rattles when you shake it (because the filament is broken)

3 you can see that the filament is broken inside the bulb

4 also - blackening of the globe is a bit of a giveaway too.... :)

Response last updated by Terry on Oct 18 2016.
Apr 22 2003, 3:34 AM
Norwich
Answer has 3 votes
Norwich

Answer has 3 votes.
...And 5. (In the case of those low energy bulbs) They give off an unpleasant smell of burning plastic just before they pop.

Apr 22 2003, 5:12 AM
Gnomon
Answer has 3 votes
Gnomon
22 year member
1331 replies

Answer has 3 votes.
If the lightbulb rattles, it may still work, but it will probably blow soon because the filament is damaged.

You can test a light bulb with an electrical resistance meter. Either current will flow in which case the bulb is OK, or it won't in which case the bulb is blown.

Apr 22 2003, 10:23 AM
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