A plane wall is 20cm thick with an area perpendicular to heat flow of 1m2 and has a thermal conductivity of 0.5W/mK. A temperature difference of 100°C is imposed across it. What is the ratio of heat flow?

A) 0.10 kW B) 0.15 kW
C) 0.20 kW D) 0.25 kW

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