hi...like to find out how do i go about calculating power if the current and resistance are changing with temperature as it rises?

thks

Printable View

- Dec 12th 2007, 03:25 AMhkscalculate power
hi...like to find out how do i go about calculating power if the current and resistance are changing with temperature as it rises?

thks - Dec 12th 2007, 08:30 AMtopsquark
$\displaystyle P = \frac{V^2}{R}$

(I'm assuming the potential of the source doesn't change.)

See here for how temperature affects resistance. (You might want to look up the term "resistivity" as well.)

-Dan