I have a textbook which says that in spherical and cylindrical capacitors the inner plate is grounded, why is it so ? And why no plate is grounded in the parallel plate capacitor ?
In every spherical and cylindrical capacitors the inner plate is not always grounded but when you ground any conductor it charge become zero. You can also ground parallel plate capacitor but in that situation law of conservation of charge doesn't follow. And when you connect any part of spherical or cylinderical capacitor that part become irrelevant and the other act as capacitor.
I have a textbook which says that in spherical and cylindrical capacitors the inner plate is...
A spherical capacitor has a spherical inner plate with radius a and outer plate with radius b. The charge on the inner plate is +Q and on the outer plate it is -Q. We have filled a cone shaped region of angle θ (0 ≤ θ ≤ π) with a dielectric with constant κ. The dielectric fills the entire volume between the two spheres inside the cone. You may neglect any fringing effects between the dielectric and the vacuum (dielectric...
A capacitor is formed from two concentric spherical conducting shells separated by vacuum. The inner sphere has radius 12.5 cm , and the outer sphere has radius 16.0 cm . A potential difference of 100 V is applied to the capacitor. Part A What is the energy density at r= 12.6 cm , just outside the inner sphere? Part B What is the energy density at r = 15.9 cm , just inside the outer sphere? Part C For a...
1. For a spherical capacitor, if the radius of the outer plate is very large in comparison to the radius of the inner plate, the capacitance equation (essentially) is: (a) C = A/k (b) C = B/k (c) C = A/kB (d) C = B/Ak 2. Find the total energy stored in the capacitors of the circuit shown below. Each capacitor is 20 μF and the battery is 100 v. (a) 0.01 J (b) 0.001 J (c) 1.0 J (d)...
You have three parallel plate capacitors, each consisting of two parallel disks of metal separated by a gap filled with some material. Rank the capacitors by their capacitances from highest to lowest, based on the provided plate radii (r), plate separations (d), and filler materials. Capacitor 1 r=5.77 mm, d=54.6 um filled with paper (k value 3.50) Capacitor 2 r=8.87 mm, d=36.7 um, filled with porcelain (k value 7.00) Capacitor 3 r=14.3 mm, d=12.4 um, filled with Germanium (k value...
An air-filled spherical capacitor is constructed with an inner-shell radius of 6.50 cm and an outer-shell radius of 12.6 cm (a) Calculate the capacitance of the device. (b) What potential difference between the spheres results in a 4.00 μC charge on the capacitor? (c) What If? What would be the length (in cm) of a cylindrical air-filled capacitor with the same inner and outer radii as the spherical capacitor if it were to have the same capacitance as the spherical capacitor?
You have three parallel plate capacitors, each consisting of two parallel disks of metal separated by a gap filled with some material. Rank the capacitors by their capacitances from highest to lowest, based on the provided plate radii (r), plate separations (d), and filler materials. Dielectric constants for each material can be found in the table to the right. Capacitor 1 (C1): r = 19.6 mm, d = 11.3 ?m, filled with air. Capacitor 2 (C2): r = 16.3 mm, d =...
Help me please :) Consider two parallel plate capacitors. The plates on Capacitor B have twice the area as the plates on Capacitor A, but the plates in both Capacitor B and Capacitor A are separated by 100~ \mu \text{m}100 μm of air. If Capacitor A has a capacitance of C_A = 30.4 nFCA=30.4nF, what is the capacitance of Capacitor B? Show work please!
In parallel plate capacitors, the area of one plate is A and the two conductor plates are separated from each other by d. At the center of the two conductor plates, a metal plate of thickness a and not charged was inserted. (The dielectric of the empty space is air (? 0) (a) Determine the capacitance of this device. (5) (b) If a metal plate with a thickness of almost zero is inserted, this metal plate appears to have no...
3. (6 points) Four parallel plate capacitors: A, B, C, and D are shown in figure below where each capacitor carries the same charge q and has the same plate area A. As per the figure, the distance between the capacitor plates are 2d, 4d, 2d andd for the capacitors A, B, C, and D, respectively. Capacitor A is maintained in vacuum while capacitors B, C, and D contain dielectrics with constant k = 4. A B C D k...