Recent content by piratebill

arh, the coefficient is a percentage of the original resistance at 0°C So to find the actual resistance increase per degree, I need to find out what 0.004% of .250 is To do that I have to times my original resistance of .250 x the coefficient of 0.004 = 0.001Ω this means that an...

sorry i still don't understand why you have to multiply it by R0 :/

hi, thanks for the welcome :) The question I have is: A long thin aluminium wire has a resistance of 0.250Ω at 0°C. Given that the temperature coefficient of resistivity at 0°C for aluminium is 4x10-3/0°C find the resistance of the wire at 200°C Ive simply transported my values into...

Hi I was wondering if anyone could help. My teacher isn't very good at explaining things and he's given us a question without going through the reasoning behind the equation. Aluminium wire has a resistance of .250Ω at 0°C. Give that the temperature coefficient of resistivity at 0°C for...