Physics - Current Electricity Question with Solution | TestHub

A Copper $(Cu)$ rod of length $25cm$ and cross-sectional area $3{\left(mm\right)}^2$ is joined with a similar Aluminium $(Al)$ rod as shown in figure. Find the resistance of the combination between the ends $A$ and $B.$

(Take resistivity of Copper $=1.7\times 10^{-8}\text{Omega}m$, Resistivity of aluminium $=2.6\times 10^{-8}\text{Omega}m$)