如图是课外活动小组设计的用化学电源使LED灯发光的装置。下列说法

如图是课外活动小组设计的用化学电源使LED灯发光的装置。下列说法错误的是(  )

A.铜片表面有气泡生成

B.装置中存在化学能电能光能的转换

C.如果将硫酸换成柠檬汁,导线中不会有电子流动

D.如果将锌片换成铁片,电路中的电流方向不变

答案

【答案】C 

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