Kirchoff's
Voltage Law states that
the sum of the differences in
Voltage (
sic) between
different points in a
closed electrical circuit is
zero. Example:
|-------A------/\/\/\/\-----B---|
| |
| |
P |
|-----C------/\/\/\/\/\/\/------|
With
power source, P, and two
resistors. The voltage of P + the change in voltage from A to B + the change in voltage from B to C = 0. You can set up an
equation with the resistances ( R1 and R2 ), the
current ( I ), and the
voltage of the power supply ( V ):
V - I * R1 - I * R2 = 0