Thermal Resistance To Conduction

Thermal expansion and Conduction Questions

Find the value of the thermal resistance of the non-uniform cylindrical rod of thermal conductivity K and length I as shown in .

Find the thermal resistance of an aluminium rod of length 20cm and area of cross section 1cm^(2) . The heat current is along the length of the rod. Thermal conductivity of aluminium =200Wm^(-1)K^(-1) .

Calculate the thermal resistance of an aluminium rod of length 20cm and area of cross-section 4cm^(2) . The thermal conductivity of aluminium is 210Js^(-1)m^(-1)K^(-1) .

Calorimetry | Thermal Expansion and Conduction based Questions

Combination Of Thermal Resistances

Assertion : Greater is the coefficient of thermal conductivity of a material, smaller is the thermal resistance of a rod of that material. Reason : Thermal resistance is the ratio of temperature difference between the ends of the conductor and rate of flow of heat.

The ratio of the coefficient of thermal conductivity of two different materials is 5 : 3 . If the thermal resistance of the rod of same thickness resistance of the rods of same thickness of these materials is same, then the ratio of the length of these rods will be

The thermal conductivity of two materials are in the ratio 1 : 2. What will be the ratio of thermal resistances of rods of these materials having length in the ratio 1 :2 and area of cross-section in the ratio 1:2 :