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Wires A and B have have identical length...

Wires A and B have have identical lengths and have circular cross-sections. The radius of A is twice the radius of B i.e. `R_A = 2R_B`. For a given temperature difference between the two ends, both wires conduct heat at the same rate. The relation between the thermal conductivities is given by-

A

`K_A = 4K_B`

B

`K_A = 2K_B`

C

`K_A = K_B//2`

D

`K_A = K_B//4`

Text Solution

Verified by Experts

The correct Answer is:
D
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