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Two identical batteries having emf 2.4 V and internal resistance 0.5$ \Omega$ are connected as shown. Potential Difference between A and B is


$\begin {array} {1 1} (a)\;4.8V & \quad (b)\;2.4V \\ (c)\;1.2V & \quad (d)\;None\: of \: these \end {array}$


1 Answer

The answer is clear if one has an understanding of what exactly is a non-ideal battery.
Here, two non-ideal batteries are connected in series and short circuited.
It is known that the potential difference across a shorted non-ideal battery is
$ 0 (V = E – ir = 0).$
Hence, the correct answer is 0 V.
Ans : (d)
answered Feb 6, 2014 by thanvigandhi_1

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