Saved Bookmarks
| 1. |
The specific resistance of a wire is "rho" ,its volume is 3m3 and its resistance is 3 ohm, then its length will be a.underroot 1/ rho b. 3/ underroot rho c.1/ rho * underroot 3 d. rho * underroot 1/3 |
|
Answer» of wire V = length L * area of cross SECTION A A = V/Lρ = resistivity of the material.Resistance of a wire R = ρ L / A = ρ L² / V L² = V R / ρ = 3 m³ * 3 Ω /ρ L = 3/√ρ the OPTION is B. |
|