Two identical cells, each of emf 2 V and of unknown internal resistance r are connected in parallel. This combination is connected to a 4 ohm resistor. If the terminal voltage across the cells in the closed circuit is 1.5 V then the internal resistance of the cell is

3 ohm

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2 ohm

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3.33 ohm

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2.66 ohm

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Solution

The correct option is D
2.66 ohm

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Two identical cells, each of emf 2 V and of unknown internal resistance r are connected in parallel. This combination is connected to a 4 ohm resistor. If the terminal voltage across the cells in the closed circuit is 1.5 V then the internal resistance of the cell is

The correct option is D 2.66 ohm

The correct option is D
2.66 ohm