To apply for UG course as B.Sc, candidate must have cleared 12th grade.
To apply for PG course as M.Sc, candidate must have cleared graduation.
There are different entrances available to appear for various courses in electronics such as JEE, BITSAT, GATE. There are both government and private exams for Electronics course which hold their own criterion of exam study.
Fundamentals of Electronics
Signals and Devices