With variable thermal conductivity, Fourier law of heat conduction through a plane wall can be expressed as

With variable thermal conductivity, Fourier law of heat conduction thr

1.	With variable thermal conductivity, Fourier law of heat conduction through a plane wall can be expressed as
A.	Q = -k0 (1 + β t) A d t/d x
B.	Q = k0 (1 + β t) A d t/d x
C.	Q = – (1 + β t) A d t/d x
D.	Q = (1 + β t) A d t/d x
Answer» B. Q = k0 (1 + β t) A d t/d x

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With variable thermal conductivity, Fourier law of heat conduction through a plane wall can be expressed as

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