I think there are many variables in this, the size of the potato, the potato it's self, how much of what metal you are using to produce the electrical exchange.
for an experiment I took a large potato just now, I sanded down one side of two pennies so that half was copper and half was zinc, I stuck these pennies deeply into the large potato then tested with a multimeter.
It produced 0.55v at 0.00mA
I'm sure if I had proper copper/zinc rods I might be able to produce better results, but it doesn't seem to be very promising in the mA area.
There are 0.075 amps in 75 milliamps.
There are zero milliamps in 12 watts.
potato
1 amp = 1000 milliamps so 1700 milliamps = 1.7 amps.
There are 1,000 milliamps [mA] per amp.
1,000 milliamps = 1 amp 180 milliamps = 0.18 amp
1,000 milliamps = 1 amp 200 milliamps = 0.2 amp
a potato because it has more density and oils
.17A=170mA
"milli" means a thousandth in the metric units of measurement. Thus 1000 milliamps = 1 amp.
Only for a very tiny house with GIANT potatoes. You would only get a few milliamps out of a potato, so 100 potatoes are a few hundred milliamps. Just enough to light up a few LEDs.
A potato produce underground tubers. It is the tubers that are edible.