Resistors in Series
Resistors in Series
Resistors in series carry the same current and their resistances add — the simplest way to build up a required resistance.
The equivalent resistance is R_eq = R_1 + R_2 + R_3. where R_1, R_2 and R_3 are the series resistances.
Inputs
R_1 := 100 Ohm=100 Ω
R_2 := 220 Ohm=220 Ω
R_3 := 330 Ohm=330 Ω
Series resistances simply add.
R_eq := R_1 + R_2 + R_3=650 Ω
Results
The total is larger than any single resistor. The same current flows through all of them, while the supply voltage divides between them.
Assumptions & limitations
- Ideal resistors.
- Single series loop, one current path.
- Temperature effects ignored.