The rate of heat flow by conduction through a slab is Pcond. If the slab thickness is doubled, its cross-sectional area is halved, and the temperature difference across it is doubled, then the rate of heat flow becomes:
A. 2Pcond
B. Pcond/2
C. Pcond
D. Pcond/8
E. 8Pcond
Answer: B. Pcond/2
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A. 
B. 
C. 
D. 
E. 
F. 
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Fill in the blank(s) with correct word
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