Two identical metal wires of thermal conductivities K 1 and K 2 respectively are connected in series. The effective thermal conductivity of the combination is:

Question

Two identical metal wires of thermal conductivities K 1 and K 2 respectively are connected in series. The effective thermal conductivity of the combination is:, 2 K 1 K 2 K 1 + K 2, K 1 + K 2 2 K 1 K 2, K 1 + K 2 K 1 K 2, K 1 K 2 K 1 + K 2

MARKS App · Accepted Answer

R e f f = l K 1 A + l K 2 A = 2 l K e q A K e q = 2 K 1 K 2 K 1 + K 2

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