An aluminium rod and copper rod of equal length `1 m` and cross-sectional area `1 cm^(2)` are welded as shown. `K_(A1) = 200 W//m^(@)C, K_(Cu) = 400 W//m^(@)C`. Find heat current

An aluminium rod and a copper rod of equal length 1.0 m and cross-sectional area. 1cm^(2) are welded together as shown in figure. One end is kept at a temperature of 20^(@)C and the other at 60^(@)C Calculate the amount of heat taken out per second from the hot end. thermal conuctivity of aluminium =200Wm^(-1) ^(@)C^(-1) and of copper =390Wm^(-1) ^(@)C^(-1) .

An aluminium rod and a copper rod of equal length 1.0 m and cross-sectional area. 1cm^(2) are welded together as shown in figure. One end is kept at a temperature of 20^(@)C and the other at 60^(@)C Calculate the amount of heat taken out per second from the hot end. thermal conductivity of aluminium =200Wm^(-1)C^(-1) and of copper =390Wm^(-1)C^(-1) .

An aluminium rod and a copper rod of equal length 1.0 m and cross-sectional area. 1cm^(2) are welded together as shown in figure. One end is kept at a temperature of 20^(@)C and the other at 60^(@)C Calculate the amount of heat taken out per second from the hot end. thermal conductivity of aluminium =200Wm^(-1)C^(-1) and of copper =390Wm^(-1)C^(-1) .

Two rods of copper and aluminium of each of equal length 20 cm and equal cross-sectional area 2 mm^(2) . They are joined (i) in series and (ii) in parallel as shown in figure. Find the resistance of the combination in each case. Resistivity of copper =1.7 xx10^(-8) Omega m and resistivity of aluminium = 2.6 xx 10^(-8)Omega m .

The ends of copper rod of length 1m and area of cross section 1cm^(2) are maintained at 0^(@)C and 100^(@)C . At the centre of rod, there is a source of heat of 32W . The thermal conductivity of copper is 400W//mK

The ends of copper rod of length 1m and area of cross section 1cm^(2) are maintained at 0^(@)C and 100^(@)C . At the centre of rod, there is a source of heat of 32W . The thermal conductivity of copper is 400W//mK

Figure shows an aluminium rod joined to a copper rod. Each of the rods has a length of 20cm and area of cross section 0.20cm^(2) . The junction is maintained at a constant temperature 40^(@)C and the two ends are maintained at 80^(@)C . Calculate the amount of heat taken out from the cold junction in one minute after the steady state is reached. The conductivities are K_(Al)=200Wm^(-1)C^(-1) . and K_(Cu)=400Wm^(-1)C^(-1) .

Figure shows an aluminium rod joined to a copper rod. Each of the rods has a length of 20cm and area of cross section 0.20cm^(2) . The junction is maintained at a constant temperature 40^(@)C and the two ends are maintained at 80^(@)C . Calculate the amount of heat taken out from the cold junction in one minute after the steady state is reached. The conductivities are K_(Al)=200Wm^(-1)C^(-1) . and K_(Cu)=400Wm^(-1)C^(-1) .

A copper rod of length 20 cm and cross-sectional area 2 mm^(2) is joined with a similar aluminium rod as shown in Fig. 4.6. Find the resistance of the combination between the ends. Resistivity of copper =1.7xx10^(-8) Omega m and resistivity of aluminium =2.6xx10^(-8) Omega m.