A parallel-plate capacitor in air has a plate separation of 1.35 cm and a plate area of 35.0 cm?. The plates are charged to a potential difference of 150 Vv and disconnected from the source. The capacitor is then immersed in distilled water. Assume the liquid is an insulator. Determine: (a) the charge on the plates before and after immersion (b) the capacitance and potential difference after immersion (c) the change in energy of the capacitor after immersion

A parallel-plate air-filled capacitor having area 38 cm² and plate spacing 1.4 mm is charged to a potential difference of 500 V. Find (a) the capacitance, (b) the magnitude of the charge on each plate, (c) the stored energy, (d) the electric field between the plates, (e) the energy density between the plates. (a) Number (b) Number (c) Number 24 (e) Number 12E-9 0.75 (d) Number 357142 0.056 Units Units Units Units Units pF μJ N/C or V/m J/m^3

A parallel-plate capacitor has circular plates of 10.8 cm radius and 1.23 mm separation. (a) Calculate the capacitance. (b) What charge will appear on the plates if a potential difference of 125 V is applied? (a) Number i (b) Number i Units Units

Two identical parallel-plate capacitors, each with capacitance 15.5 F, are charged to potential difference 46.0 V and then disconnected from the battery. They are then connected to each other in parallel with plates of like sign connected. Finally, the plate separation in one of the capacitors is doubled. (a) Find the total energy of the system of two capacitors before the plate separation is doubled. (b) Find the potential difference across each capacitor after the plate separation is doubled. (c) Find the total energy of the system after the plate separation is doubled. (d) Reconcile the difference in the answers to parts (a) and (c) with the law of conservation of energy. O Positive work is done by the agent pulling the plates apart. Negative work is done by the agent pulling the plates apart. No work is done by pulling the agent pulling the plates apart.