[skyberrys]

I found my research field in undergrad ( that lead to grad research ) from going to university talks. To apply it to this situation, once you are in an EE program get the events list for multiple departments and try going to every talk scheduled. Talk to your teaching assistants ask them what they are doing and to tell you about events.

I did wander somewhat but every major to topic I started on I finished. I see another comment recommending a physics program and that is true. I did my undergrad in this, went to talks for physics, CE, CS and EE. The topic I choose was the one I found myself staying up to 3am for just one more experiment run. Once that kept happening it's a good signal you can keep after something and contribute to advancing research.