
1.2 Resistors (contd.)
Any combination of resistors in series can be replaced
by a single resistor of value R given by
R = R1 + R2 + R3 for example.
Any combination of resistors in parallel can be replaced by
a single resistor of value R given by
1/R = 1/R1 + 1/R2 + 1/R3 for example.