Ohm’s Law is a fundamental principle in electrical engineering and physics that describes the relationship between voltage (V), current (I), and resistance (R) in an electrical circuit. It is named after the German physicist Georg Simon Ohm, who first formulated it.
Ohm’s Law is expressed by the equation:
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 of the conductor (measured in ohms).
This equation indicates that the voltage across a conductor is directly proportional to the current flowing through it and the resistance of the conductor. In other words, if you know any two of the values (voltage, current, or resistance), you can use Ohm’s Law to calculate the third.