wiki/articles/ohms_law.md

Ohm's Law

One of the fundamental laws of electronics and electricity, relating voltage (V [E, sometimes]), resistance (R) and intensity (I).

V = I * R
R = V / I
I = V / R

where
    V = Voltage, R = Resistance (in ohms), I = Current (intensity, in amperes)

Graphical mnemonic:
                     _
                    / \
                   / V \
                  /--+--\
                 / I | R \
                *----+----*

See Also

• Watt's Law