Answer:
ρ = 1.70 Ωm
Explanation:
given data
diameter = 1.8 mm
distance = 4.8 cm
volt = 9 V
potential difference = 280
solution
we know that Resistance that is express as
Resistance = [tex]\frac{V}{I}[/tex] ..............1
V = I × R
and
V = I × [tex]\frac{\rho L}{A}[/tex] ..........2
put here value we get
9 = 280 ×[tex]10^{-6}[/tex] × [tex]\frac{\rho \times 0.048}{\pi \times 0.9^2 \times 10^{-6} }[/tex]
ρ = 1.70 Ωm
