1. ## calculate 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

2. Originally Posted by hks
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
$P = \frac{V^2}{R}$
(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