What effect of electric current is observed in an electric kettle?

In order to answer the question, you need to figure out what kind of electric current actions are.
There are three types of them. Let’s look at everything in turn.
1. Magnetic
During this action, the conductor through which the current passes is endowed with magnetic properties. That is, under certain conditions, it can attract magnetic objects to itself, or vice versa, repulse, and so on.
2. Thermal
Due to the large heat release, the conductor heats up (the conductor must be metallic).
3. Chemical
This action can only take place in liquid conductors. It is characterized by the release of various substances that were contained in the solution during the passage through the current conductor.
Now we need to determine what action occurs during the operation of the electric kettle. As we all know, the kettle heats up, thereby boiling the water. Therefore, the thermal effect of the electric current occurs here.
Answer: thermal