Question

Two metal wires of indentical dimensions are
connected in series. If sigma1 and sigma2 are the
conductivities of the metal wires respectively, the
effective conductivity of the combination is
[Re-AIPMT-2015]
2002
(1)
9,02
0 +02
oto2
oto2
(4)
0,02

Answer 1

Pata nahi bhai.................................