How much current is needed to thermally expand iron, aluminium and copper coils?

[dazza24383]

Hi guys,

I need to find out what current i need to expand different type of coils. eg iron, aluminium, copper, etc. Is there a website that can give me this information? I tried searching but no luck.

Thx
Dazza

 

[Hootenanny]

Try searching for the resistivity of those metals. A non ideal inductor (coil) can be modeled as an ideal inductor (zero resistance) in series with a resistor equal in value to the resistance of the length of wire.