Resistance from Resistivity (R = ρL/A)
jee-mainjee-advancedneet-ug
R = ρL/A
What each symbol means
| Symbol | What it stands for |
|---|---|
| A | Cross-sectional area (m²) |
| L | Length along current (m) |
| R | Resistance (Ω) |
| \rho | Resistivity (Ω·m) |
When to use this
Uniform conductor, steady DC, temperature fixed unless given.