The resistivity o

Given

Resistivity (ρ) = 1.7 × 10^-8 Ωm

Diameter (d) = 0.1 mm = 0.1×10^-3 m

(∵ 1m = 1000 mm)

Resistance(R) = 34 Ω

Area of cross section (A) =

A =

⇒ A =

Now

⇒

⇒

⇒

⇒

Hence the length of the wire is 15.7 m.