Homework Help: Physics

Posted by J on Monday, February 4, 2008 at 7:09pm.

A certain resistor has a resistance of 1.484 omega at 20 degrees celsius and a resistance of 1.512 omega at 34.0 degrees celsius. What is its temperature coefficient of resistivity?

ok..I used a temperature equation but I can't get the right answer. so maybe I am doing something wrong

Physics - bobpursley, Monday, February 4, 2008 at 8:02pm
I will be happy to check your work.
Physics - J, Monday, February 4, 2008 at 8:13pm
ok I used 1.512 = 1.484[1+ alpha (34-20)] and the answer in the back of my book isn't the answer I am getting
Physics - bobpursley, Monday, February 4, 2008 at 8:16pm
That is the right equation.

Then....
alpha= (1.512-1.484)/(14*1.484)

check my thinking.
Physics - J, Monday, February 4, 2008 at 9:36pm
ok yea! I got it now..I just made a stupid mistake with my algebra! Thank you!

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