Question

an electric device of resistance R is connected across a source of voltage V and draws a current I. derive an expression for power in terms of current and resistance ​

Answer 1

Hey Buddy !☺

Resistance = R
Voltage = V
Current = I

=> V= I × R-------【1】

Also,
$P = V \times I\\ \\ = > P = I\times R \times I \: \: \: (from【1】) \\ \\ = >\fbox{P = {I}^{2} \times R}$

$\huge\mathcal{BRAINLIEST}$