Yes. Mostly correct. Resistance/impedance basically same. He might get best answer. But - Nobody actually checked their answers with a multimeter. Come on, be truthful. What was the difference between your algebraic answer(we all know ohm's law) and the reading on your meter?? And why? I want to know. This is not a silly trick question. I am a qualified man and would really like an answer to this before I kick the bucket. Oh, and yes, thanks to the answerer(there's a new word for you!) who reminded me about the temp. difference. Please come back to me on this one. I have really enjoyed your input - it is nice to talk to intelligent people.
2006-12-23 16:05:12 · 11 answers · asked by Anonymous in Science & Mathematics ➔ Physics
http://uk.ard.yahoo.com/SIG=12svorkib/M=200071361.201266870.202581386.200794375/D=uk_know/S=2114717202:HEAD/Y=UKIE/EXP=1167023497/A=200544666/R=4/SIG=13nu18tne/*http://login.europe.yahoo.com/config/login?logout=1&.intl=uk&.src=knowsrch&.done=http%3a%2f%2fuk.answers.yahoo.com%2f
2006-12-23 16:13:26 · answer #1 · answered by Anonymous · 2⤊ 0⤋
A light bulb is characterized by its electrical resistance. If its working on DC current, you can ignore the impedance. So you have R=U/I. If you measure the R with a meter, you will get a value slightly different than the real value, because of resistance of the wire and the meters own error. When the bulb its "hot", its resistance is a little bit higher, because the resistance of the tungsten filament is directly proportional with the temperature.
So what is your question?
2006-12-24 00:24:21 · answer #2 · answered by eagle 2 · 0⤊ 0⤋
Since I don't have a 240V, 100 W bulb, I can hardly measure one with my ohm meter.
But the typical increase for an incandescent bulb will be in the 50:1 range (i.e. if cold=10 ohms, hot=500 ohms)
Refer to my previous answer for more detail.
There, damn it, you've got the answers - and, hopefully, before you've kicked the bucket.
2006-12-24 00:15:03 · answer #3 · answered by LeAnne 7 · 0⤊ 0⤋
To the question you asked previously,
Le Anne has given the correct answer. Choose that answer as the best.
I believe that you have not gone through that answer.
If you want you can add additional information in that question.
Before choosing the best answer, it is not correct to post a new question which is based on the previously posted question.
2006-12-24 01:34:52 · answer #4 · answered by Pearlsawme 7 · 0⤊ 0⤋
dont know ohm?is he like an enforcer of ? a ? law.
Ever tried reading a taychon
2006-12-24 01:28:56 · answer #5 · answered by Anonymous · 0⤊ 0⤋
Well personally I like vanilla icecream better than raspberry ripple and my dog is called Rex!
Hope this helps!
2006-12-24 00:15:02 · answer #6 · answered by Anonymous · 1⤊ 0⤋
I think the light is on but no ones at home
2006-12-24 00:11:22 · answer #7 · answered by Anonymous · 1⤊ 0⤋
What are you talking about? Was there a link you wanted to include?
2006-12-24 00:08:16 · answer #8 · answered by Amy F 5 · 1⤊ 0⤋
I think you need to make your questin more clear.
2006-12-24 01:43:33 · answer #9 · answered by Nitin T F1 fan 5 · 0⤊ 0⤋
i don't understand what you are trying to ask.
2006-12-24 00:07:42 · answer #10 · answered by eric l 6 · 1⤊ 0⤋
you don`t have any friends , do you ?
2006-12-24 00:47:17 · answer #11 · answered by Anonymous · 0⤊ 0⤋