lemon and electricity experiment

800millivolts acid acidic amper anode battery battery-types bio bio-battery bio-cell bio-energy capacity cathode chemical-reaction chemistry circle copper copper-electrode digital education electric-current electrical electricity electrolyte electronics energy-source energy-storing experiment fruit gadget generating hand ions lab laboratory laboratory-experiment lemon lemon-battery lemon-cell levels light lighting measuring measuring-instrument millivolt millivolts multi-meter orange physics produce read renewable school-experiment school-laboratory screen separator sulfuric-acid voltage voltmeter volts yellow zinc zinc-electrode zinc-metal