Law means rules of conduct and is enforced by the state in the administration of justice. There are a large number of institutions in India, which offer courses in law.
Since you are pursuing B.E in Electronics & Telecommunication, you can go for a three-year law (LL.B) course after graduation in any discipline. Admission to this course is through a CLAT entrance exam.
Common Law Admission Test (CLAT) is an all India entrance examination conducted by eleven National Law Universities for admissions to their under-graduate and post-graduate degree programmes (LL.B & LL.M).
However, we suggest you to go in the same field of Electronics & Communication Engineering or related courses for further studies. You can do M.Tech/M.E. in same field. There are also a huge career opportunities in this field. You will get good payoff after completing you education in the field of engineering and it is also good for your career growth as you have experience for same. The final decision is yours whether you want to go in law or engineering field.