Admission in electrical branch or any engineering branch is through an entrance exam like JEE MAIN, BITSAT, VIT etc..

Based on your percentage in the above exams you become eligible as in JEE Main mainly you require 50% minimum.

Every exam has its own eligibility criteria. Check here for JEE main.

You can check the scope and details about the course here: Electrical engineering

Hope this helps.

Good luck!