For a cell, the graph between the potent...

For a cell, the graph between the potential difference (V) across the terminals of the cells and the current I drawn from the cell is as shown in figure. Calculate the e.m.f. and the internal resistance of the cell.

`2V, 0.5 Omega`

`2V, 0.4 Omega`

`gt 2V, 0.5 Omega`

`gt 2V, 0.4 Omega`

Text Solution

Verified by Experts

The correct Answer is:

Since, `V =E-ir`
when `I =0, V = E = 2V`
Slope of curve `V - I = r = 2/5 = 0.4 Omega`

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