Understanding Ohm's Law
Ohm's Law is a fundamental formula used in electrical engineering and physics to calculate the relationship between voltage, current, and resistance in an electrical circuit. It states that the current through a conductor between two points is directly proportional to the voltage across the two points.
The Ohm's Law Formula
The mathematical relationship is expressed as:
V = I × R
Where:
- V = Voltage (Volts)
- I = Current (Amperes)
- R = Resistance (Ohms)
Calculating Missing Variables
If you know any two of the three values, you can calculate the third:
- To find Voltage: Multiply Current by Resistance ($V = I \times R$).
- To find Current: Divide Voltage by Resistance ($I = V / R$).
- To find Resistance: Divide Voltage by Current ($R = V / I$).