Ohm's law describes the relationship between three fundamental electrical quantities: voltage (V), current (I), and resistance (R). It states that the current flowing through a conductor is directly proportional to the voltage applied across it and inversely proportional to the resistance of the conductor. Mathematically, Ohm's law can be expressed as:
V = I * R
where: V represents the voltage measured in volts (V), I represents the current measured in amperes (A), and R represents the resistance measured in ohms (Ω).
Ohm's law is a fundamental principle in electrical engineering and plays a crucial role in analyzing and designing electrical circuits. It provides a fundamental understanding of how voltage, current, and resistance are interrelated.