Question

A cell of emf ‘’ and internal resistance ‘r’ sends current 1.0A when it is connected to an

external resistance 1.9Ω. But it sends 0.5A when it is connected to an external resistance of

3.9Ω. Calculate the values of and r.
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Answer 1

Answer:

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Answer 2

ANSWER ⋇⋆✦⋆⋇　

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