A battery is rated according to a 20-hour rate of discharge at 300 ampere-hours ___

A battery is rated according to a 20-hour rate of discharge at 300 ampere-hours.

Which of the following currents is the maximum current that will allow the battery to deliver its rated capacity?

A. 15 amperes
B. 20 amperes
C. 25 amperes
D. 30 amperes

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Answer: A

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