Resistivity and Combinations of Resistors
What determines a material's resistance, and how resistors combine in a circuit.
Resistivity
Resistivity is a material property that determines how strongly it opposes current flow, independent of its shape or size.
Resistors in Series and Parallel
| Combination | Rule |
|---|---|
| Series | R = R₁ + R₂ + ... |
| Parallel | 1/R = 1/R₁ + 1/R₂ + ... |
Lesson 7 of 32