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Two batteries of emf epsilon(1) and epsi...

Two batteries of emf `epsilon_(1)` and `epsilon_(2)` produce a current of 1.5 A when they are in opposition and 2.5A when they are in series. Find the ratio of the two emf's.

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The correct Answer is:
`epsilon_(1):epsilon_(2)=4:1`
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NN GHOSH-FUNDAMENTAL OF CURRENT ELECTRICITY-Exercises
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  4. How you would arrange 24 cells, each of emf 1.5V and internal resistan...

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  13. Two identical cells of emf 1.5V and internal resistance 1Omega are joi...

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  14. A battery of emf 6V internal resistance 5Omega is joined in parallel w...

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  15. A battery of emf 6 volts and internal resistance 1Omega is connected i...

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  16. Two batteries of emfs 24V and 6V and internal resistance 2Omega and 1O...

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