Question

resistance of a metal wire of length 1 metre is 26 CM of 20 degree Celsius of the diameter of the wire is 0.3 mm what will be the resistivity of the metal at that temperature
​

Answer 1

Explanation:

26yatandh the mental subscribe dh6drwgehjd6ehev3gu72626

Answer 2

Answer:

R=26 Ω

l=1m

d−0.3mm

r=

2

d

=

2

0.3×10

−3

=0.15×10

−3

m

A=πr

2

=3.14×(0.15×10

−3

)

2

=0.071×10

−6

m

2

R=

A

ρL

or ρ=

l

RA

=

1

26×0.071×10

−6

=1.84×10

−6

Ωm...