The potential difference across a cell in an open circuit is \(8 V\). It falls to \(4 V\) when a current of \(4 A\) is d…
Q1
The potential difference across a cell in an open circuit is \(8 V\). It falls to \(4 V\) when a current of \(4 A\) is drawn from it. The internal resistance of the cell is :
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