Ohms Gesetz

Overview

Ohm's law states that the current through a conductor between two points is directly proportional to the voltage across the two points, and inversely proportional to the resistance.

Key Formulas

Ohm's Law

$V = I \cdot R$

Voltage = Current × Resistance.

Power

$P = V \cdot I = I^2 R = \frac{V^2}{R}$

Electrical power dissipation.

Energy

$E = P \cdot t$

Energy = Power × Time.

Variables

Ohm's Law Calculator

Key Facts

• Ohm's law applies to linear (ohmic) conductors — most metals at constant temperature
• Non-ohmic devices (diodes, thermistors) do not follow Ohm's law
• The power equations P=VI, P=I²R, P=V²/R are derived from Ohm's law

References

• Original Source