PHYS 221.assign Chl 9.5 Name Capacitance book assignment Ch 1 9.5 Conceptual Questions 14. Does the capacitance ofa device de pend on the applied voltage? What about the charge stored in it? 15. Use the characteristics of the Coulomb force to proportional to the plate area of a capacitor. Similarly, inversely proportional to the separation between plates explain why capacitance should be explain why capacitance should be 16. Give the reason why a dielectric material increases capacitance compared with what it would be with air between the plates of a capacitor. What is the independent reason that a dielectric material also allows a greater voltage to be applied to a capacitor? (The dielectric thus increases C and permits a greater V.) 21. If you wish to store a large amount of energy in a capacitor bank, would you connect capacitors in series or parallel? Explain. Problems 46. What charge is stored in a 180 uF capacitor when 120 V is applied to it? 47. Find the charge stored when 5.50 V is applied to an 8.00 pF capacitor. 49. Calculate the voltage applied to a 2.00 uF capacitor when it holds 3.10 [AC of Charge. 50. What voltage must be applied to an 8.00 nF capacitor to store 0.160 mC of charge? 51. What capacitance is needed to store 3.00 tiC of charge at a voltage of 120 V