An emf source with E = 120V,a resistor with R = 50.0, and a capacitor with C

Question:

An emf source with E = 120V,a resistor with R = 50.0Ω, and a capacitor with C = 4.00 µF are connected in series. As the capacitor charges, when the current in the resistor is0.900 A, what is the magnitude of the charge on each plate of the capacitor?