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A picture of the electroplating apparatus can be found attached. The nail (cathode) is completely submerged and that is where reduction happens. In the other side, the copper strip is (anode) where oxidation happens. The electron flow happens from the anode to the cathode. The positive charge of the battery is attached to the anode while the negative side is attached to the cathode.

An electrolytic cell is a device that convert electrical energy to chemical energy.
What is an electrolytic cell?
An electrolytic cell is a device that used electrical energy to carry out redox reactions.
It is used in decomposition reaction, used to decompose chemical compounds.
In the figure attached, there is a battery and two electrodes
One is anode from where the electron loose and one is cathode where electrons are accepted.
Thus, the figure is attached.
Learn more about electrolytic cell, here:
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