Ohm's law

(I): V/R - Ampere
(V): I * R - Resistance
(R): V/I - Voltage

Ohm's law states that the electric current flowing through a conductor is directly proportional to the voltage difference between its ends and inversely proportional to its resistance.

(I) is the electric current, measured in amperes (A)

(V) is the voltage difference, measured in volts (V)

(R) is the resistance, measured in ohms (Ω)

Equivalencies:

(I) : V/R - Ampere

(V) : I * R - Resistance

(R) : V/I - Voltage

Diode Resistance