What happen when electricity is passed through tap water?

When electricity is passed through tap water, which typically contains dissolved ions and impurities, it can conduct electricity due to the presence of these ions. The flow of electric current can lead to electrolysis, where water molecules break down into hydrogen and oxygen gases. This process can also cause the formation of chemical byproducts, such as chlorine, depending on the composition of the water and the electrodes used. Additionally, if the current is strong enough, it may produce heat, potentially causing water to boil or damaging electrical components.