4. if charge q is stored on a capacitor, what is the magnitude of positive charges stored on one plate? what is the magnitude of negative charges stored on the opposite plate?

If charge q is stored on a capacitor, one plate of the capacitor holds a positive charge Q, while the other holds a negative charge -Q. While charging a capacitor charges move in such a way that , firstly a single electron gets added to one side of the capacitor and then the electron has a electric field that repels other electrons . This field reaches through space and pushes the electron in the other plate  because of which that plate acquired an induced positive charge . This is how same amount of charge get acquired on both the plates  . Hence , one plate of the capacitor holds a positive charge Q, while the other holds a negative charge -Q. To know more about capacitor here  : https://brainly.com/question/17176550#SPJ4