Question

plzzz ans this urgent​

Answer 1

Answer:

Given: R=26 Ω, l=1m, d=0.3mm

Step 1: Resistivity of the metal (ρ)

We know that resistance can be given as :

R=

A

ρ l

⇒ρ=

l

R A

....(1)

Step 2: Calculations and Substituting the values

A=

4

πd

2

=3.14×

4

(0.3×10

−3

m)

2

=0.071×10

−6

m

2

From equation (1)

ρ=

1 m

26 Ω×0.071×10

−6

m

2

=1.84×10

−6

Ωm