Question

- Two wires of same length and area made
of two materials of resistivity P, and p, are
connected in series to a source of potential
V. The equivalent resistivity for the same
area is​

Answer 1

Answer:

1

=

A

ρ

1

l

R

2

=

A

ρ

2

l

R+R=

A

2ρl

∴2R=R

1

+R

2

2ρ=ρ

1

+ρ

2

∴ρ=

2

1

(ρ

1

+ρ

2

)