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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediumsingle choice

Two rods of conductivities $k_{1} = 100$ and $k_{2} = 20$ are welded side by side. Their cross-sectional areas are $s$ and $3 s$ . Find the conductivity of the composite rod.

Options:

Answer:

Solution:

The rods are in parallel. $k_{e q} = \frac{100 \times s + 20 \times 3 s}{4 s} = 40$ . C.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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