Question

derive the equation p= V/I

Answer 1

know that P = I^2R is to find heat loss. but can we use P = V^2/R or P = IV to find the heat loss? simply when do we use which?? (or can we use all anytime?) 

Reference https://www.physicsforums.com/threads/when-to-use-p-i-2r-p-vi-p-v-2-r.751591/

Answer 2

Hope this helps you......!