Question

If resistance of a conducting wire of length 10 m is 20 ohm and area of cross section is 2.5 mm² find resistivity of conductor.​

Answer 1

Answer:

Given : A=10 mm

2

=10×10

−6

m

2

n=5×10

20

/m

3

Current I=

R

V

=

5

25

=5 A

Drift velocity V

d

=

Ane

I

⟹ V

d

=

10×10

−6

×5×10

20

×1.6×10

−19

5

=6.25×10

3

m/s

Answer 2

✨this is your answer hope it's helpful for you thankyou I✨