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Physics - Heat & Thermo Question with Solution | TestHub

PhysicsHeat & ThermoHeat TransferMedium2 min

PhysicsMediuminteger

Between points $A$ and $B$ a straight rod has three parts of lengths 10 cm, 40 cm and 10 cm. The middle 40 cm part is bypassed by a curved rod of 60 cm joining its two ends, and the rod material and cross-section are the same everywhere. The total heat current from $A$ to $B$ is 170 W. Find the current in the curved rod, in W.

Answer:

Solution:

The curved rod (60 cm) is in parallel with the middle 40 cm part, so currents divide inversely as lengths: curved = $170 \times \frac{40}{40 + 60} = 68$ W.

Subject:PhysicsTopic:Heat & ThermoSubtopic:Heat Transfer

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