Short circuiting a cell
If resistance of the wire AB = R is zero & the switch S is closed, then the cell is said to be short circuited.
Then we can write & In fact this is the maximum value of current that can be supplied by a cell or a battery.
i.e. terminal potential difference of a short circuited cell is zero.
A cell with high emf & low internal resistance is most likely to be damaged due to short circuiting.