3 ms·
As another comment explains, it is merely getting back some of the energy expended in extracting metallic zinc and copper from their ores. Also such potato ba
by publicola1990 6y ago
As another comment explains, it is merely getting back some of the energy expended in extracting metallic zinc and copper from their ores.
Also such potato batteries have been a school science projects for long.
- nardi 6y agoI'm not defending potato batteries, I'm just pointing out that the article already explains all of this.