The reaction in which hydrogen and oxygen are produced by running an electric current through water is an example of

Decomposition is the example of a reaction in which hydrogen and oxygen are produced by running an electric current through water.

Decomposition of water through electrolysis of water into oxygen and hydrogen gas due an electric current passed through water. when an electric current is passed through water, oxygen gas is being produced at the anode and hydrogen gas is produced at the cathode.

The answer is electrolysis. This is the chemical reaction that decomposes a substance (usually while in its liquid state) to its components by passing an electric current through it. Electrolysis of water is used to produce hydrogen fuel and also produce oxygen that can be used to supplement breathable air such as in submarines.