CH4 CQ

• A parallel –plate capacitor of capacitance C with distance d between plates is fully charged from a battery of voltage V and stays connected. The plates of capacitor are slowly pulled to the half of initial distance (d/2). Voltage on this capacitor is now:

  V
• A parallel –plate capacitor of capacitance C with distance d between plates is fully charged from a battery of voltage V and stays connected. The plates of capacitor are slowly pulled to the half of initial distance (d/2). Charge on this capacitor is now:

  2VC
• A parallel –plate capacitor of capacitance C with distance d between plates is fully charged from a battery of voltage V and stays connected. The plates of capacitor are slowly pulled to the half of initial distance (d/2). Energy stored in this capacitor

  increased 2 times
• Something to think about: Consider two conducting spheres. Sphere A has radius R and is charged to the charge Q. Sphere B is initially neutral and has radius 2R. We connect spheres with a conducting wire. When the system comes to equilibrium, what is the charge on sphere B?

  2Q/3
• Capacitors 2 and 3 are in series after 1, but parallel with each other. Capacitor 3 is the only one after the switch. The diagram shows three capacitors, an ideal battery, and an open switch, S. The three capacitors all have the same capacitance C, voltage is V. All capacitors are identical. How the closing of switch S will change equivalent capacitance of this circuit?

  It will increase
• Capacitors 2 and 3 are in series after 1, but parallel with each other. Capacitor 3 is the only one after the switch. The diagram shows three capacitors, an ideal battery, and an open switch, S. The three capacitors all have the same capacitance C, voltage is V. All capacitors are identical. How the closing of switch S charge stored in capacitance 1?

  It will increase
• Capacitors 2 and 3 are in series after 1, but parallel with each other. Capacitor 3 is the only one after the switch. The diagram shows three capacitors, an ideal battery, and an open switch, S. The three capacitors all have the same capacitance C, voltage is V. All capacitors are identical. How the closing of switch S will change voltage drop on capacitance 1?

  It will increase
• Capacitors 2 and 3 are in series after 1, but parallel with each other. Capacitor 3 is the only one after the switch. The diagram shows three capacitors, an ideal battery, and an open switch, S. The three capacitors all have the same capacitance C, voltage is V. All capacitors are identical. How the closing of switch S charge stored in capacitance 2?

  It will decrease
• Capacitors 2 and 3 are in series after 1, but parallel with each other. Capacitor 3 is the only one after the switch. The diagram shows three capacitors, an ideal battery, and an open switch, S. The three capacitors all have the same capacitance C, voltage is V. All capacitors are identical. How the closing of switch S will change voltage drop on capacitance 2?

  It will decrease