Question

How do I isolate the “I” variable

Answer 1

Answer:

$I = \pm \sqrt{\dfrac{P}{R}}$

Step-by-step explanation:

$P = I^2R$

Divide both sides by R.

$\dfrac{P}{R} = I^2$

Switch sides.

$I^2 = \dfrac{P}{R}$

Take the square root of both sides.

$I = \pm \sqrt{\dfrac{P}{R}}$