Ohm's Law is a fundamental concept in physics that describes the relationship between voltage, current, and resistance in an electrical circuit. It was named after the German physicist Georg Simon Ohm, who discovered this relationship in the early 19th century.

Voltage (V) is the measure of electric potential difference between two points in a circuit. It is commonly represented by the symbol V and measured in volts (V). Voltage can be thought of as the force that pushes electric charges through a circuit.

Current (I) refers to the flow of electric charge in a circuit. It is measured in amperes (A) and is represented by the symbol I. Electric current can be compared to the flow of water in a pipe. Just as water flows through a pipe when there is a pressure difference, electric charges flow through a conductor when there is a voltage difference.

Resistance (R) is a property that opposes the flow of electric current in a circuit. It is measured in ohms (Ω) and is represented by the symbol R. Resistance can be thought of as an obstacle that hinders the flow of charges. Materials with high resistance, such as insulators, impede the flow of current, while materials with low resistance, such as conductors, allow current to flow more easily.

Understanding Ohm's Law is crucial as it forms the basis for many electrical calculations and practical applications. By quantifying the relationship between voltage, current, and resistance, Ohm's Law enables us to predict and control the behavior of electric circuits.