[JoseMourinho]

first i wanna excuse my english skills, i am not from an english-speaking country...
i have a question about the voltaic pile. there, you use the oxidation of zinc and hydrogen gas is formed at the copper electrode.

my question is: which voltage do you get from this cell? do you get the potential difference between zinc and copper or between zinc and hydrogen?

[Ksharindam]

In practical cell of one copper and one zinc you will get approximately 0.9 volt.and you will gate potential difference between zinc and copper plate.i used a digital multimeter to measure the volt.you can buy one.