*Therefore... if we rearrange Ohms law we can calculate more variables*
`I = V / R` to calculate Current
`R = V / I` to calculate Resistance
### Additionally
>Ohm’s law states that the voltage (V) across a resistor is proportional to the current (I), where the constant of proportionality is the resistance (R).
>E.g. If a 200 ohm resistor is attached across the terminals of a 3V battery, then a current of 3 / 200 = 0.015 amps flows through that resistor.
*Futhermore...*
> If there are multiple resistors in series, we can reduce the current by the sum of all the resistors together