实验目的探究不同水果组合成的电路与其产生电流的关系实验器材香蕉、苹果、柠檬、毫安电流表、导线、铜片、锌片实验原理不同电极,活泼金属做负极,发生氧化反应,失去电子;较不活泼金属或非金属做正极(如石墨)得到电子,发生还原反应,由 Experimental Objectives To explore the relationship between the circuit formed by different fruit groups and their generated current Experimental equipment Banana, apple, lemon, milliampere ammeter, wire, copper, zinc film Experimental principle Different electrodes, active metal as the negative electrode, oxidation reaction, loss of electrons; More inactive metal or non-metallic positive (such as graphite) to get electrons, a reduction reaction, from