Question

for cell graph between potential difference across terminals of cell and current drawn from cell is as shown in figure. calculate emf and internal resistance of cell​

Answer 1

Answer:

PHYSICS

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 (see Figure). The emf and the internal resistance of the cell are E and r, respectively.

V=E−ir.

When i=0, the potential reading is 2 V.

Hence emf is 2 V.

When V=0, i=5A. This gives r=0.4Ω.

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