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A steel rod with the thermal conductivity of 50.2 W/(m-K) has an area of cross-section 0.02m² and length 15cm. If the two ends of the rod are maintain

Question

A steel rod with the thermal conductivity of 50.2 W/(m-K) has an area of cross-section 0.02m² and length 15cm. If the two ends of the rod are maintained at a temperature difference of 300 °C, the rate of heat ﬂow through the rod is:

3.0 kJ/s

1.0 kJ/s

4.0 kJ/s

2.0 kJ/s

Solution

Correct option is D

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A steel rod with the thermal conductivity of 50.2 W/(m-K) has an area of cross-section 0.02m² and length 15cm. If the two ends of the rod are maintained at a temperature difference of 300 °C, the rate of heat ﬂow through the rod is:

3.0 kJ/s

1.0 kJ/s

4.0 kJ/s

2.0 kJ/s

Correct option is D

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