# Ohm`s law

Ohm's law is named after the German physicist of the same name, Georg Simon Ohm (1787 to 1854), and describes the relationship between voltage (U), current (I) and resistance (R).

Ohm's law states that for DC voltage, there is proportionality between the voltage across a resistor and the current flow through it: U = I x R. Derived from this, the current flow is proportional to the voltage and inversely proportional to the resistance. This means that the current increases with increasing voltage and decreases with increasing resistance.