Question

Resistance of a metal wire of length 1 m is 26 12 at 20°C. If the
diameter of the wire is 0.3 mm, what will be the resistivity of the
metal at that temperature? Using Table 12.2, predict the material
of the wire.​

Answer 1

Answer:

Let resistivity is p

Formula,

R=p*(l/a)

p=R*a/l

p=12*(pi*0.15*10^-6)/1

Solve this