Physics Question 49 – JEE-MAIN 2026

When an external resistance of $5\mathrm{\Omega }$ is connected across terminals of a cell, a current of $0.25$ A flows through it. When the $5\mathrm{\Omega }$ resistor is replaced by a $2\mathrm{\Omega }$ resistor, a current of $0.5$ A flows through it. The internal resistance of the cell is _______ $\mathrm{\Omega }$.