Question

For a cell, a graph is plotted between the potential difference V across the terminals of the cell and the current I drawn from the cell. The e.m.f and internal resistance of the cell is E and r , respectively.

• A. E = 2V, r = 0.5
• B. E = 2V, r = 0.4
• C. E > 2V, r = 0.5
• D. E > 2V, r = 0.4

Answer 1

The correct option is B

E = 2V, r = 0.4

Here y intercept is E=2V

And x intercept gives 5r=E