Two rods of the same length and diameter are made from different materials. The

Question

Two rods of the same length and diameter are made from different materials. The rods are to connect two regions of different temperature so that energy will transfer through the rods by heat. They can be connected in series, as in Figure (a), or in parallel, as in Figure (b). In which case is the rate of energy transfer by heat larger?

1.)When the rods are in parallel.

2.)The rate is the same in both cases.

3.) When the rods are in series.

Two rods of the same length and diameter are made from different materials. The rods are to connect two regions of different temperature so that energy will transfer through the rods by heat. They can be connected in series, as in Figure (a), or in parallel, as in Figure (b). In which case is the rate of energy transfer by heat larger? 1.)When the rods are in parallel. 2.)The rate is the same in both cases. 3.) When the rods are in series.

Explanation / Answer

in series Ks = 2K1*K2/(K1+K2)

in parallel Kp = (K1+K2)/2

Ks > Kp

3.) When the rods are in series

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