Ohm's Law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage, current, and resistance in an electrical circuit. It is named after the German physicist Georg Simon Ohm, who first formulated it in the 1820s.
The law states that the current (I) flowing through a conductor between two points is directly proportional to the voltage (V) across the two points and inversely proportional to the resistance (R) of the conductor. Mathematically, Ohm's Law is expressed as:
V = I * R
V = Voltage (measured in volts, V)
I = Current (measured in amperes, A)
R = Resistance (measured in ohms, Ω)
In other words, if you increase the voltage across a conductor (while keeping the resistance constant), the current flowing through it will increase proportionally. Conversely, if you increase the resistance (while keeping the voltage constant), the current will decrease proportionally.
Ohm's Law is a fundamental tool for analyzing and designing electrical circuits, and it forms the basis for understanding how voltage, current, and resistance interact in various electrical components and systems.