Each cell has emf e and internal resistance r in figure. By Seekh Raha Hoon

Each cell has emf e and internal resistance r in figure. Find the current through resistance R.

Each cell has emf e and internal resistance r in figure. Find the current through resistance R. How to Draw Diagram in Corel Draw By Seekh Raha Hoon

If each cell in the figure has an emf of "e" and an internal resistance of "r", then the total emf of the circuit would be the sum of all individual cell emfs (ne), and the total internal resistance would be the sum of all individual cell internal resistances (nr), where "n" is the number of cells connected in series.

The current through resistance R is I = e / (R + 2r).
Explanation:
Equivalent circuit:
Since the two cells are connected in series, their emfs add up, and their internal resistances also add up, resulting in a single equivalent cell with emf 2e and internal resistance 2r.
Applying Ohm's Law:
To find the current through resistance R, use the formula I = V / R, where V is the potential difference across R. In this case, V = 2e - (current * 2r) since the voltage drop across the internal resistance is also considered.

When calculating the total resistance in a series circuit, simply add the individual resistances.
The emf of a cell is the potential difference across its terminals when no current is flowing.
Internal resistance is the resistance within a cell that opposes the flow of current.

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