Question

He resistance of a wire of length 150 cm and of uniform area of cross-section 0.015 cm2

, is found to be 3.0 .
Calculate the specific resistance of t

Answer 1

0.0003Ωcm

Step-by-step explanation:

The resistance of a wire = (the resistivity of the material × the length) ÷ the cross-sectional area (thickness)

R = ρl ÷ A

3.0Ω = (ρ x 150cm) ÷ 0.015 cm²

3.0Ω × 0.015 cm² = ρ x 150cm

(3.0Ω × 0.015 cm²) ÷ 150cm = ρ

ρ = 0.0003Ωcm