Ohm’s Law explains the linear relationship between voltage and current, meaning current passing through a conductor in a circuit between two points is directly proportional to the voltage.

It can be calculated mathematically by applying formulas below where (V) is the voltage difference, (I) is current in measured in amperes or amps, (R) is resistance measured in ohms and (P) is power measured in watts.

Calculate Voltage: V = I × R

Calculate Resistance: R = V / I

Calculate Current: I =  V / R

Calculate Power: P = V × I