Suppose we have a conductor that has a length, l, and a cross-sectional area, A. One end of the conductor is at a temperature of T1 and the other end is at a lower temperature, T2. The ability of the material of the conductor to allow conduction to occur is called its thermal conductivity, k.
a. Suggest some factors, specific to the material of the conductor, that might affect its thermal conductivity.
b. The rate at which thermal energy is transferred through the conductor, ΔtΔQ . Suggest how ΔtΔQ depends on i l .