Physics Question 49 – JEE-MAIN 2026

Two cells of emfs $1\text{ V}$ and $2\text{ V}$ and internal resistance $2\mathrm{\Omega }$ and $1\mathrm{\Omega }$, respectively connected in parallel, gave a current of $1\text{ A}$ through an external resistance. If the polarity of one cell is reversed, then value of current through the external resistance will be $\frac{\alpha }{5}\text{ A}$. The value of $\alpha$ is _______.