what is exactly electronical Engineering

I think you are asking about Electrical Engineering. If you want to go for Electronics then you may pursue Electrical and Electronics Engineering or Electronics and Communication Engineering.

The main purpose for Electric Engineering is the engineering to design efficient electrical systems for Industrial as well as applied purpose. It focuses on electric power systems, smart grid approaches to power transmission and distribution, power system planning, operation and control, electricity markets, renewable power generation, microgrids, power electronics, electrical machines and drives, electric vehicles, railway electrification systems and electric transportation infrastructures, energy storage in electric power systems and vehicles, high voltage engineering, electromagnetic transients in power networks, lightning protection, electrical safety, electrical insulation systems, apparatus, devices, and components.

To know more about Electrical Engineering you may visit the link provided below:

https://www.careers360.com/courses/electrical-engineering-course

For Electrical and Electronics Engineering you may visit:

https://www.careers360.com/courses/electrical-and-electronics-engineering-course

For Electronics and Communication Engineering you may visit the link below:

https://www.careers360.com/courses/b-tech-in-electronics-and-communication-engineering

I hope my answer helps. All the very best for your future endeavors!