Ohm's Law is a fundamental principle in electrical engineering that describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It states that the current passing through a conductor is directly proportional to the voltage across it and inversely proportional to the resistance. The law is mathematically expressed as:

V = I * R

Where:
V : is the voltage across the conductor (measured in volts),
I : is the current flowing through the conductor (measured in amperes),
R : is the resistance provided by the conductor to the flow of current (measured in ohms).

Ohm's Law implies that if you increase the voltage across a conductor while keeping the resistance constant, the current will increase proportionally. Conversely, if you increase the resistance while keeping the voltage constant, the current will decrease.