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The capacity of a storage battery, such as those used in automobile electrical systems, is rated...

The capacity of a storage battery, such as those used in automobile electrical systems, is rated in ampere-hours (A · h). A 50-A · h battery can supply a current of 50 A for 1.0 h, or 25 A for 2.0 h, and so on. Consider a 12.0-V battery that has an internal resistance of 0.26 Ω and a capacity of 55.8 A · h. The battery is charged by passing a 9-A current through it for 6.2 h.

(a) What is the terminal voltage during charging? V

(b) What total electrical energy is supplied to the battery during charging? J

(c) What electrical energy is dissipated in the internal resistance during charging? J

(d) The battery is now completely discharged through a resistor, again with a constant current of 9 A. What is the external circuit resistance? Ω

(e) What total electrical energy is supplied to the external resistor? J

(f) What total electrical energy is dissipated in the internal resistance? J

(g) Why are the answers to parts (b) and (e) not the same?

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Solum duinc c) 2.40戶62J )/W,annys V p:/2x ss,3x 60x60

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