We know that The Ohm's law formula states that The resistor's current I in amps (A) is equal to the resistor's voltage V in volts (V) divided by the resistance R in ohms (Ω): so I=V/R In some cases, Ohm's law uses the letter E<span> to represent voltage. </span>E<span> denotes electromotive force </span>I=E/R
