^what field of ee are you going into? CS is something that is useful to like everyone lol. not even just engineers. i kno many biz kids getting minors in cs and stuff. physics might be good if you going into solid state or optics or something. math helps if you doing systems. etc..
ya so physics might be good. Don't be too intent about getting a minor though. Look at ur schools course guide and choose classes that you think will help you in your field. I coulda easily gotten a physics or math minor but I choose not to in exchange to take more classes in electrical and comp eng because I thought that would help me more.
It seems like the minor does not matter as much as the actual classes.