A power supply has an open-circuit voltage of 34.0 V and an internal resistance

Question

A power supply has an open-circuit voltage of 34.0 V and an internal resistance of 2.00 ?. It is used to charge two storage batteries connected in series, each having an emf of 7.00 V and internal resistance of 0.300 ?. The charging current is to be 3.70 A.

(a) What additional resistance should be added in series?
?

(b) At what rate does the internal energy increase in the supply?
W

(c) At what rate does the internal energy increase in the batteries?
W

(d) At what rate does the internal energy increase in the added series resistance?
W

(e) At what rate does the chemical energy increase in the batteries?
W

A 2.00-nF capacitor with an initial charge of 4.05

Explanation / Answer

power ,current and voltage formula can be used

resistenc ewill increase due to flow of curerent

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