Engineering Physics at IIT Madras is a multidisciplinary field that combines elements of both Physics and Mathematics. Those who have a passion for both Physics and Mathematics and are not sure about core Electrical can go for this course.
The branch comprises multiple courses some of which might even not sign with your interests. But this happens in almost every branch. Despite it all, you gain excellent exposure to a wide range of fields and thus eventually help you clear your doubts regarding the branch.