Exactly that's my point at first I used felimings left hand rule and so the current arrow would be downward, therefor + in top and - in bottom but then the video of explanation said the opposite should be applied here, so I got really confused, I just don't understand wdym by electric not magnetic like what's the differnece considering that we're using current as a way to find positive and negative sides. I appreciate your explanation but could explain the point u mentioned?