Two identical capacitors Ca and Cb each of capacitance 5.85μ F are connected in parallel across a CONSTANT total electric potential difference 620 V. A dielectric slab of dielectric constant 7.3 can fill Ca and is slowly inserted into that capacitor. A) What is the change in charge, ΔQa, on Ca when the dielectric is added to Ca? B) What is the change in charge, ΔQb, on Cb when the dielectric is added to Ca?

An air-filled parallel-plate capacitor has plates of area 2.00 cm2 separated by 1.70 mm. The capacitor is connected to a(n) 11.0 V battery. (a) Find the value of its capacitance. pF(b) What is the charge on the capacitor? pC(c) What is the magnitude of the uniform electric field between the plates? N/C

An engineer builds a parallel-plate capacitor with adjustable spacing between the plates. When the plates are at their initial separation, the capacitance is 2.00 uF. (a) At this capacitance, the capacitor is connected to a 20.00 V battery. After fully charging, how much energy (in ) is stored in the capacitor? μJ (b) The battery is then disconnected. Without discharging the capacitor, the engineer then doubles the separation between the plates. At this point, how much energy (in µ3) is stored in the capacitor? p] (c) Without changing this new separation between the plates, the capacitor is discharged, and then reconnected to the 20.00 V battery. Now, after fully charging, how much energy (in p) is stored in the capacitor? p3

A parallel-plate capacitor has square plates that have edge length equal to 1.20×10^2cm and are separated by 1.00 mm. It is connected to a battery and is charged to 12.0 V. 1)How much energy is stored in the capacitor? (Express your answer to three significant figures.)