Thank you everyone for the reply. And its getting interesting. Sorry to go further, becoz i would like to have a proper idea behind that equation.
I am attaching few docs for your reference, which i found in the web, which shall be useful to you all.
>>> supporting doc for R@t2 =...
Thank you for your guess. I searched the web for this equation; all i found was the standard equation. Wanted to know whether is there any standard equation like R@T2 = R@20(1+α@20(T2-20).
As you mentioned "Io" is the rated design current and "I" is the actual load current.
I know the basic equation to find resistance at different temp from the following:
R@T2 = R@20(1+a@20(T2-20),
where,
"T2" is the temperature at which the new resistance to be found,
"a" (alpha) is the temperature coefficient @ 20deg C (0.00393)
I am trying to understand the posted equation...