1) Hydrogen’s electron and proton are separated by 5.3x10-13 meters. What is the electrical force between them? 2) A charge moved .02 meters in an electric field of force 215 N/C. If the electric potential decreased by 6.9x10-19, what is the charge of the particle? 3) If a capacitor has 3.0x10-6 F of capacitance and holds 3.6x10-5 C of charge on each plate, what is the voltage of the battery connected to it? 4) Iron has a resistance of 19.0 Ohms. What is the current if the potential difference is 120 V?