Question

If two wires of same dimension but resistivites 1 and 2 are connected in series, then their equivalent resistivity will be

Answer 1

Let,

Resistivity of first wire R1= 1 ohm

,, ,, 2nd ,, R2=2 ohm

Since,the wires are connected in series,

.·. Equivalent resistance Rs

= R1 + R2

=1 + 2

= 3 ohm.

Hope it helps :D