Foods has some Chemical Potential Energy which can be converted into electricity. Chemical potential energy that comes from food is called calories . since banana have calories it has small quantity of electricity.
enough to kill a person
45 volts
1000
230 Volts
As many as a regular banana, later on.
Zero volts.
0.016 volt
1.55 volts
230 volts
45 volts
50,000 Volts.
4160 volts