Electrical conductivity

Generally yes , but it depends on the material.

Conductivity of water increases with temperature, some materials have a negative temperature coeficient, some postive. Look up NTC and PTC thermistors.

They are generally not linear relationships. (some are over limited range.)

...and then there was the EE student who called his girlfriend "Carbon" because her resistance went down as she warmed up...

Now you know that I am old, very old.

..what happened to her capacitance and polarities , attracting or repeling...

Reminds me of a T-shirt on an electrical engineering student who worked for me 25 or so years ago . . . "Electrical Engineers do it with greater frequency and less resistance!"

Most of the electrical engineers I know have the personalities of a carbon resistor.

Usually though, the colder the better. Superconductivity is based upon this premise and most common conductors move more electrons/time as the temp goes down; that's why computer geeks use exotic cooling systems to keep their computers ~~~!!CCCOOOLLLDDDDD!!~~~

http://en.wikipedia.org/wiki/Superconductivity

But some Plasmas conduct very well at Very hot temps.

Brad

divya, the entire thread has gone off track...

the conductivity of the conductor depends upon its property of tempperature co-efficiency of the conductor.

satibala_b@yahoo.com

It is within the context of divya's question. I could have answered mostly NO! or over small ranges YES! The question was a students question so I gave a students answer.

Half of the art of learning is how to ask question. The next half is discernment of the answer. The next half is how to do research. Yes 150%, most of us struggle to attain 100%. I like to think I'm doing good at 85%.

An idiot can have a good idea, a genius makes mistakes.

I could assume to fill in the parts of the questions, but I'm not a crutch. Nor do I read divya's mind to know with certainty what divya wants.

divya is not registered as a guest and nor are you, that in its self deserves an answer. Super conductors are conductors. Plasma conductors are used in florescent lights.

And if divya does not have a sense of humor it is a harsh world.

divya my answer was meant to make you realize conductors are not just wires. (an assumption)To many Engineers starting out act as if they have "blinders" on.(the eye flaps for horses that only let them look forward) sad but true. If you found my answer disrespectful it was not the intent.

Personally I liked Del's answer. But that is an emotional quantity. Emotions have a tendency to limit knowledge. Gut feelings are a different animal.

Brad

ps and if you, Minsaramanithan, mistakenly replied to me insted of the discussion ignore the rantings of a mad man.

If we are being pedantic, then your answer is no better as it merely re-states the questions but as a 'scientific term' ...e.g. You don't say anything about the magnitude or sign of the elusive 'temperature coefficient'.

QED

DEL

Greatly. And it depends on the charateristics of the material. The conductivity of water is largely dependent on the nature and quantities of the substances dissolved in it, for example.