AAMC FL1 #52 C/P

[77deuce]

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Resistance and temperature..

Does having a higher temperature in an electrical wire increase the resistance of a wire?
I know R=(roe)L/A.
An alternative answer choice (B) in this question made me wonder if temperature had an effect.

Thanks~

 

[Doogie.Howser]

Yes. Increasing the temperature will also increase the resistance. The higher T has the atoms within the metal wire moving around and allowing them to collide with and slow down the flow of electrons that create the current. Higher T = higher R.

 

[aldol16]

Yes. Increasing the temperature will also increase the resistance. The higher T has the atoms within the metal wire moving around and allowing them to collide with and slow down the flow of electrons that create the current. Higher T = higher R.

Not in all cases. It depends on the substance you're looking at and its so-called 'temperature coefficient of resistance': Temperature Coefficient of Resistance | Physics Of Conductors And Insulators | Electronics Textbook

 

[Doogie.Howser]

Not in all cases. It depends on the substance you're looking at and its so-called 'temperature coefficient of resistance': Temperature Coefficient of Resistance | Physics Of Conductors And Insulators | Electronics Textbook

Interesting! I can't recall learning about this. Thank you for citing, too 🙂