A long conductor of circular cross-section has radius r and length ℓ as shown in the figure. The conductivity is σ₁ at the axis and increases linearly with distance from the axis to σ₂ at the surface. Find the resistance of the conductor when current enters through one end and leaves through the other.
Physics · Current electricity · Electric Current, Drift Velocity & Resistance
A long conductor of circular cross-section has radius r and length ℓ as shown in the figure. The conductivity is σ₁ at the axis and increases linearly with distance from the axis to σ₂ at the surface. Find the resistance of the conductor when current enters through one end and leaves through the other.
Options