An empty capacitor has a capacitance of 5.57 μF and is connected to a 12−V battery. A dielectric material (K = 4.5) is inserted between the plates of this capacitor. What is the magnitude of the surface charge on the dielectric that is adjacent to either plate of the capacitor? (Hint: The surface charge is equal to the difference in charge on the plates with and without the dielectric.) Number Units
