Question

Define resistance of a conductor. What is the SI unit?

Answer 1

Concept Used: Resistance

Body of the solution:

1. Resistance is defined as the property of a conductor, to resist or oppose the flow of charges through it.
2. The resistance of a conductor is directly proportional to its length and inversely proportional to its area of cross-section$\mathrm{Resistance}\mathrm{of}\mathrm{a}\mathrm{conductor}\mathrm{R}$ ∝ $\frac{\mathrm{length}\left(l\right)}{\mathrm{Area}\mathrm{of}\mathrm{cross}\mathrm{section}\left(\mathrm{A}\right)}$
3. The SI unit of resistance is Ohm $\left(\mathrm{\Omega }\right)$ and it is denoted by letter $\mathrm{R}$.