Circuit analysis

Circuit analysis

Ohm's law triangle

In circuit analysis, three equivalent expressions of Ohm's law are used interchangeably:

Each equation is quoted by some sources as the defining relationship of Ohm's law,^[2][11][12] or all three are quoted,^[13] or derived from a proportional form,^[14] or even just the two that do not correspond to Ohm's original statement may sometimes be given.^[15][16]

The interchangeability of the equation may be represented by a triangle, where V (voltage) is placed on the top section, the I (current) is placed to the left section, and the R (resistance) is placed to the right. The line that divides the left and right sections indicate multiplication, and the divider between the top and bottom sections indicates division (hence the division bar).