All of them will be shown step by step. This refers to capacitors where the dielectric is formed by an electrolytic process. Wet electrolytic capacitors have an actual moist electrolyte, while dry or solid electrolytic capacitors don't. There is fundamentally little difference between these two types.
Electrolytic capacitors have several undesirable properties.
They are inherently polar devices, meaning that the anode of the capacitor must be more positive than the cathode. Most electrolytic capacitors can withstand small and brief amounts of reverse voltages, but this is not recommended. The main concern is internal heat and gas generation. Large value capacitors may explode. However, some electrolytic capacitors are manufactured to handle reverse voltages up to a large percentage of the working voltage, for example up to 0.3 W vdc or 0.8 W vac .