Answer Happy

1. A parallel plate capacitor is connected to a 150 V battery. If the surface charge density on the positive plate of the capacitor is 25 nC/cm², what is the distance between the plates of the capacitor? 2. A parallel plate capacitor filled with a dielectric of dielectric constant 2.5 has plates of area 2.3 cm? separated by a distance of 1.5 mm. It is connected to a 10 V battery. a. What is the capacitance of this capacitor? b. How much charge does the capacitor store? C. What is the magnitude of the electric field inside the capacitor? 3. Suppose that for the capacitor in question 2, while it is connected to the battery, someone removes the dielectric material from the capacitor. What happens to each of the following (increase, decrease, stay the same)? Explain your reasoning. a. Potential difference between the plates of the capacitor. b. Capacitance of the capacitor. C. Charge on the capacitor. d. Electric field inside the capacitor.