某品牌的MP3使用的电源是一节7号干电池,当它正常工作时,其工作

某品牌的MP3使用的电源是一节7号干电池,当它正常工作时,其工作电流为0.3A。某同学在一次使用该MP3时,若他用了10s,则这段时间内电池将多少化学能转化为电能?

答案

3.2A

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