Make I the subject of the formula V = IR.
a) I = VR
b) I = V/R
c) I = R/V
I = R/V
actually I would pick b)
but I do electrical circuits :)
To make "I" the subject of the formula V = IR, we need to rearrange the formula to isolate I on one side. Here are the step-by-step instructions:
1. Start with the formula V = IR.
2. Divide both sides of the equation by R to isolate I. This gives us V/R = I.
Therefore, the formula with I as the subject is:
b) I = V/R
To make "I" the subject of the formula V = IR, we need to isolate the variable "I" on one side of the equation. Here's how we do it:
V = IR (Given formula)
To isolate "I", we divide both sides of the equation by "R":
V / R = IR / R
On the right side, the "R" cancels out, leaving us with just "I":
V / R = I
So, the formula with "I" as the subject is:
I = V / R
Therefore, option (b) I = V/R is the correct answer.