Answer: R = V / I
Explanation:
P = VI (power = voltage x current)
Ohm's Law tells us that V = IR.
Substitute IR for V in the first formula: P = (IR)I = I 2 R.
Rearrange to solve for resistance: R = P / I 2.
In a series circuit, the current across one component is the same as the total current. This is not true for a parallel circuit.
