This is the 18395th most frequent Russian word.
электрических
"Electrical."
The word "электрических" is used in the genitive case plural form, describing the type of outlets.
В доме установили новые электрических розетки.
New electrical outlets were installed in the house.
Here, "электрических" describes to the materials, indicating their property related to electricity.
Мы изучаем свойства электрических материалов.
We are studying the properties of electrical materials.
In this sentence, "электрических" qualifies the wires, specifying that they are associated with electrical systems.