I'm trying to develop a story with super-humans where powers are evoked through the person's emotion during the trigger. I would like to give the lead the power over electromagnetism. Now, I was wondering how to include the fundamental forces as powers and their applications. Strong nuclear force being the strongest and gravity being the weakest, I wanted to applications for these forces in correspondence to their actual strengths. Meaning that strong nuclear force should be able to negatively affect all other three(to a certain extent; that may not be how they actually interact). I don't have the greatest grasp regarding these concepts and wanted to improve on my story building.
Assumptions would be that the laws of physics hold true as much as possible. There are limits to each power and the powers don't work at a planetary scale.
P.S. I'm new to the forum so I don't know how things work. So, if there's an issue with the question let me know and I will try to edit it and republish the query.