A series battery by 6 lead accumulators ...

A series battery by 6 lead accumulators each of emf 2.0V and intenal resistance `0.5Omega` is charged by a 20V d.c. supply, What series resistance should be used in the charging, circuit in order to limit the current to 1A. Calculate the power sullpied by the source and the fraction of energy stored in the battery.

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The correct Answer is:

`5Omega,20W,0.6`

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