檸檬發電實驗

1a) There is no different in voltage generated. Since the power output is depends on what metals and what kind of acid you used, the sizes of the "container" will affect have long the cell can be use. A smaller lemon will give a short life.

b) The main point is not number of piece, but the total sizes. A bigger lemon will give a longer life. But keep in mind that the voltage are the same. If you are connecting the lemon cells in series (not lemon) like we connect many batteries in series, this will increase the voltage output.

2a) The silver of the pins are the coating, this coating are a protection layer, it always is non-conducting. You can use iron, but you need to remove the protective layer first.

b) The copper wires are also covered by a protective layer, you need to remove the protective layer first. But if the wire is too thin, it is hard to use or to remove the protective layer. You are better to use a coarser one.

3a) I forgot the max. voltage output of the lemon cell. But you can increse the voltage by connecting many lemon cells in series.

b) If you use a digital voltmeter, you can measure a very small voltage. They are more sensitive.

1a.佢會發電係因為lemon有acid,細個d既lemon電力當然會弱d
b.no

2a.我唔肯定呢d係咪zn
b.太幼唔得

3a.檸檬發電,講真電力好弱