This method is common in ships where a static charge is created due to the flow of water. In the sacrificial anode coating, zinc is used to protect metals. It is not mandatory that cathode and anode will always be used together, there are applications where anode alone is used. And the side where we will connect the negative terminal will be the cathode.

In the case of capacitors and diodes, the anode is that side where we connect the positive terminal, this is because current will enter from this side. So in this case, the anode will be the positive terminal of the battery. So in this case anode will be the negative terminal because electricity flows into the negative terminal.Дuring charging of the battery, the electricity flows from the negative terminal of the battery to the positive terminal of the battery. We canвЂ™t define an anode as positive or negative because its polarity depends upon the type of cell being used.Дuring discharging of a battery or we may say that when a load is connected to the battery, the electricity flows from the positive terminal of the battery to the negative terminal of the battery. An anode is a terminal where current flows into a device from the outside. It can also be defined as the electrode from which the current enters into the polarized electrical device. The electrode at which oxidation reaction takes place is known as the anode. The anode attracts anions in an electrolytic cell.Д¬athode attracts cations in an electrolytic cell. Polarity of the terminals in a galvanic cell Polarity of the terminals in an electrolytic cell Reduction reaction occurs at the cathode. Oxidation reaction takes place at the anode. Type of reaction taking place at the electrode LetвЂ™s see the key differences between anode and cathode through the following table. It is an eminent component of an electrochemical cell that remains in contact with the electrolyte. An electrode is a substance that helps in the conduction of electricity wherein the current enters or leaves the non-metallic medium like an electrolyte. Before learning about anode and cathode we need to understand what an electrode is.

Diode cathode