Question

How do I isolate the “I” variable

Answer 1

`I = \pm \sqrt{(P)/(R)}`

Explanation:

`P = I^2R`

Divide both sides by R.

`(P)/(R) = I^2`

Switch sides.

`I^2 = (P)/(R)`

Take the square root of both sides.

`I = \pm \sqrt{(P)/(R)}`