Resistance against temperature graph

AI Thread Summary
The discussion focuses on the relationship between temperature and resistance in a filament lamp. As the temperature of the filament increases, its resistance also increases due to the positive temperature coefficient of resistance in metals. The graph of resistance versus temperature typically shows a rising curve, indicating this direct relationship. Participants suggest researching "resistivity" for a deeper understanding and inquire about the specific equation that describes this relationship. Understanding this concept is crucial for analyzing the performance of filament lamps under varying temperatures.
hms.tech
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Hi, i have a problem about the relationship of temprature and resistance.

What will be the graph of resistance of a filament (in a lamp) against temprature. In particular, what happens to the resistance of the filament (in a lamp) if i increase its temprature ?
 
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hms.tech said:
Hi, i have a problem about the relationship of temprature and resistance.

What will be the graph of resistance of a filament (in a lamp) against temprature. In particular, what happens to the resistance of the filament (in a lamp) if i increase its temprature ?

There is an equation that relates resistance and temperature -- try looking up "resistivity" on wikipedia, or you can google resistance versus temperature.

Can you show us the equation?
 

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