This is long answer:
Electrical engineering is one of the newer branches of engineering, and dates back to the late 19th century. It is the branch of engineering that deals with the technology of electricity. Electrical engineers work on a wide range of components, devices and systems, from tiny microchips to huge power station generators.
Always in demand: the technology sector grew rapidly in the last decades and so did the demand for those who create, understand and develop electrical control systems, which means good job opportunities for you after graduation.
High salaries: as an electrical engineer, you will begin your career higher on the salary ladder than e.g. teachers or social science graduates.
Future technologies: electrical engineering is at the forefront of developing new technologies for a number of industries including those of transport, healthcare, construction and robotics.
TLDR: Electrical Engineering is about working with electronics and technology, it’s big due to the fact that it’s high paying and technology constantly evolves.