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PhysicsHeat & ThermoConductionMedium2 minPYQ_2021

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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 diagram: Two identical metal wires of thermal conductivities K 1 and

Options:

Answer:

Solution:

$R_{e f f} = \frac{l}{K_{1} A} + \frac{l}{K_{2} A} = \frac{2 l}{K_{e q} A}$

$K_{e q} = \frac{2 K_{1} K_{2}}{K_{1} + K_{2}}$

Stream:JEESubject:PhysicsTopic:Heat & ThermoSubtopic:Conduction

⏱ 2mℹ️ Source: PYQ_2021

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