Ohm's Law:

The mathematical relationship among three fundamental electrical quantities, namely, (1) electromotive force, E (in volts), (2) current strength, I (in amperes), and (3) resistance, R (in Ohms), is expressed by Ohm's law. The law states that the current flowing in a conductor is equal to the potential difference between any two points divided by the resistance among them. That is display as follows,

I = E/R or E = IR                                                                  ... (1.1)