Find the equivalent parallel resistance from 1/R_eq = 1/R₁ + 1/R₂ + …; total resistance is below the smallest branch.
并联电阻总电导为各电导之和。
| Item | Standard / Source | Key Point |
|---|---|---|
| Parallel resistance | Kirchhoff circuit laws; Classic electromagnetism (Griffiths, Electrodynamics) | 1/R = 1/R1 + 1/R2 + ...; result below smallest branch |