Parallel plate Definition and 275 Threads

A parallel-plate fluid flow chamber is a benchtop (in vitro) model that simulates fluid shear stresses on various cell types exposed to dynamic fluid flow in their natural, physiological environment. The metabolic response of cells in vitro is associated with the wall shear stress.
A typical parallel-plate flow chamber consists of a polycarbonate distributor, a silicon gasket, and a glass coverslip. The distributor, forming one side of the parallel-plate flow chamber, includes inlet port, outlet port, and a vacuum slot. The thickness of the gasket determines the height of the flow path. The glass coverslip forms another side of the parallel-plate flow chamber and can be coated with extracellular matrix (ECM) proteins, vascular cells, or biomaterials of interest. A vacuum forms a seal to hold these three parts and ensures a uniform channel height.Typically, the fluid enters one side of the chamber and leaves from an opposite side. The upper plate is usually transparent while the bottom is a prepared surface on which the cells have been cultured for a predetermined period. Cell behavior is viewed with either transmitted or reflective light microscope.

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  1. A

    Electrostatics - parallel plate capacitor

    Two parallel uniform charged circular conducting metal disks contains a charge of +Q and -Q on the inner surfaces, and little amounts of charge +q and -q on the outer surfaces. The detail is shown in the diagram. Each plate has a radius R and thickness t. The separation of the plates is d...
  2. A

    Parallel plate capacitor problem

    A parallel plate capacitor is formed using a material whose dielectric constant is 3,00 and whose dielectric strength is 2x10^{8} V/m. The capacitance is 0,25x10^{-6}F and the capacitor must withstand a potential difference maximum of 4000V. Find the minimum area of the plates of the capacitor...
  3. M

    What is the dielectric constant of the slab on a parallel plate capacitor ?

    Homework Statement When a certain air-filled parallel-plate ca- pacitor is connected across a battery, it ac- quires a charge (on each plate) of magnitude 214 μC. While the battery connection is maintained, a dielectric slab is inserted into the space between the capacitor plates and...
  4. T

    Parallel plate capacitor and insulating material

    Homework Statement A parallel-plate capacitor has plates of 10 cm^2 area separated by a 0.10mm layer of glass insulation with resistivity rho = 1.2x10^13 omega*m and dielectric constant k= 5.6. Because of the finite resistivity, current can leak through the insulation. How do I Show...
  5. M

    Percentage of energy in a dielectric placed between a parallel plate conductor

    Homework Statement A dielectric of dielectric constant 3 fills three fourth of the space between the plates of a parallel plate capacitor. What percentage of the energy is stored in the dielectric? E(r) = 3, distance between plates = d, thickness (t) = (3/4) * d, C=capacitance of the...
  6. J

    Electric field across a parallel plate capacitor

    Hello, If I had a potential source (V) , a resistor R, and a parallel plate capacitor, would the Electric field across the capacitor become E = (V - IR)/L L = distance between capacitor or would the electric field simply become E = V/L ?? thank you!
  7. T

    Electron Deflection in Parallel Plate Capacitor

    Homework Statement A Problem of Practical interest is to make a beam of electrons turn a 90 degree corner. This can be done wit ha parallel plate capacitor shown. An electric with kinetic energy of 3.0x10^-17J moves up through a small holes in the bottom plate of capacitor. What is field...
  8. P

    How Does Changing Plate Radius Affect Capacitance in a Parallel Plate Capacitor?

    Consider a parallel plate capacitor constructed from two circular metal plates of radius R. The plates are separated by a distance of 1.6mm a. What radius must the plates have if the capacitence is 2.8 micro F? b. if the separation between the plates is decreased, should the radius of the...
  9. S

    Parallel Plate Capacitor Connected to Battery: Answers

    Homework Statement A parallel plate capacitor with plate separation d is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.) Give all correct answers concerning a parallel-plate capacitor charged by a...
  10. H

    What is the Charge and Error in a Parallel Plate Capacitor?

    A capacitor with capacitance of C = 8.5±1 μF has a potential difference of V = 4.5±0.4 Volts. What are the charge on the capacitor and the error in this value, in μC? To find charge I just use Q = C*V correct? And how do I calculate the error? Thank you!
  11. X

    J"Calculating Work for Charging a Parallel Plate Capacitor

    Homework Statement A parallel plate capacitor is changed to an electric potential of 334V by moving 3.78e16 electrons from one plate to the other. How much work is charging the capacitor? Homework Equations Delta V= Delta PE/ q c=q/v The Attempt at a Solution Delta V= Delta PE/ q...
  12. G

    I hope that helped.How to Find Energy Stored in a Parallel-Plate Capacitor?

    Homework Statement A parallel-plate capacitor has plates with an area of 410 cm^2 and an air-filled gap between the plates that is 2.00 mm thick. The capacitor is charged by a battery to 560 V and then is disconnected from the battery. a.How much energy is stored in the capacitor? b.The...
  13. N

    How to Calculate Electric Energy in a Spherical Capacitor with Dielectric?

    Homework Statement I am doing a problem in my physics textbook where there is two concentric hollow spheres and the space between them is filled with a dielectric substance. The question asks for the electric energy in this space. Homework Equations The only given equation for the C of...
  14. H

    Electron and parallel plate question >

    electron and parallel plate question >:( Homework Statement The diagram below shows an electron entering the region between the parallel plates of a cathode ray tube. The electron has an initial velocity of 4.8x10^7 m/s horizontally and enters the exact middle point between the plates. The...
  15. T

    Magnetism, Displacement Currents and Parallel Plate Capacitors

    Homework Statement The preceding problem was an artificial model for the charging capacitor, designed to avoid complications associated with the current spreading out over the surface of the plates. For a more realistic model, imagine thin wires that connect to the centres of the plates (see...
  16. C

    Velocity of a particle in a parallel plate, electric field problem

    Homework Statement A particle with a mass of 2.0 x10^-5 kg and a charge of +2.0 microColoumbs is released in a (parallel plate) uniform horizontal electric field of 12 N/C a) HOw far horizontally does the particle travel in 5.0 s? b) What is the horizontal component of its velocity at...
  17. L

    How Does Membrane Thickness Affect the Electric Field in a Nerve Cell?

    The cell membrane in a nerve cell has a thickness of 0.12 micrometers. (a) Approximating the cell membrane as a parallel plate capacitor with a surface charge density of 5.9 x 10^(-6) C/m2, find the electric field within the membrane. (b) If the thickness of the membrane were doubled, would...
  18. K

    How Does a Parallel Plate Capacitor with Different Dielectrics Calculate Keq?

    A parallel plate capacitor is constructed such that there are two different dielectric materials in between the plates, each occupying half the space in between . Still this capacitor can be modeled as a simple parallel plate capacitor with same total area A, plate separation d, but with an...
  19. N

    Conceptual Parallel Plate Capacitor

    Homework Statement Which statements are correct/incorrect for two oppositely charged, isolated parallel plates: (C=capacitance, U=stored energy, +Q and -Q = charge on the plates). Correct Incorrect When the distance is doubled, U is unchanged. Correct Incorrect Inserting a dielectric...
  20. J

    Parallel Plate Capacitor (work and potential difference)

    Homework Statement Professor Milly Coulomb finds it takes 3.0 J of work to drag, at constant speed, a -9.0 mC charge between the plates of a parallel plate capacitor. (a) What is the work done by the electrical force in taking the charge between the plates? (b) What is the potential...
  21. S

    Circuit with a parallel plate capacitor

    Homework Statement 1.) Consider a parallel plate capacitor with plates of area 1.36 m2 whose plates are 1.24 cm apart. The gap between the plates is filled with air (assume that κair is unity) and the positive plate has a charge of 10.5 nC on it while the negative plate has a negative charge...
  22. F

    Parallel Plate Capacitors Being Separated

    Homework Statement A parallel-plate air capacitor is made by using two plates 10 cm square, spaced 4.7 mm apart. It is connected to a 15 V battery. If the plates remain connected to the battery and the plates are pulled apart to a separation of 9.9 mm. What is the new capacitance? What is...
  23. H

    Current through parallel plate capacitor vibration sensor

    Homework Statement A parallel plate capacitor is used as a vibration sensor. The plates have an area of 100cm^2, the dieelectric is air, and the dist between the plates is given by d(t)=1+.01 sin(200 t) mm A constant voltage of 200 V is applied to the sensor. Determine the current...
  24. N

    Finding the electric field magnitude in a parallel plate compacitor.

    Problem: The drawing shows an electron entering the lower left side of a parallel plate capacitor and exiting at the upper right side. The initial speed of the electron is 9.42 x 10^6 m/s. The capacitor is 2.00 cm long, and its plates are separated by 0.150 cm. Assume that the electric field...
  25. S

    Parallel plate capacitor problem

    1.) Consider a parallel plate capacitor with plates of area 1.36 m2 whose plates are 1.24 cm apart. The gap between the plates is filled with air (assume that κair is unity) and the positive plate has a charge of 10.5 nC on it while the negative plate has a negative charge of equal magnitude on...
  26. Y

    Parallel Plate Capacitor True or False

    I keep getting the questions wrong. I'm so frustrated. I'd appreciate it if anyone can tell me what's wrong. Which statements are correct/incorrect for two oppositely charged, isolated parallel plates (Isolated means that the charge stays constant ): (C=capacitance, U=stored energy, +Q and...
  27. S

    Parallel plate capacitor and dielectric

    Homework Statement a parallel-plate capacitor (2 plates) is filled with titanium dioxide which has a dielectric constant of 80. the area of each plate is 1 cm^2. a) what must be the spacing between the plates if one wishes to make a 10^-10 farad capacitor? b) if the dielectric strength...
  28. S

    How Do You Calculate the Capacitance of Two Charged Parallel Plates?

    Homework Statement two parallel plates have equal and opposite charges of 0.01 coulombs. the electric field between the plates is 10^5 Newtons/coulomb and the separation between the plates is 2mm. what is the capacitance of the plates? Homework Equations capacitance C = Q/V where Q is charge...
  29. S

    How Is the Potential Difference Calculated in a Suspended Charge Scenario?

    A point charge of mass 0.0836 kg and charge q = +6.84 μC is suspended by a thread between the vertical parallel plates of a parallel-plate capacitor, as shown in the figure below. If the angle of deflection is θ = 22.3°, and the separation between the plates is d = 0.0221 m, what is the...
  30. R

    Distance-Varying Electric Field and Voltage of Parallel Plate Capacitors

    Homework Statement I encountered the following capacitor problem on a recent test and it has brought up a couple of questions about the voltage and electric field of parallel plates. In summary my questions are: 1) How is the electric field between parallel plates quantitatively related...
  31. S

    Parallel plate capacitor find the volts

    A parallel-plate capacitor with only air between the plates is charged by connecting it to a battery. The capacitor is then disconnected from the battery, without any of the charge leaving the plates. A.) A voltmeter reads 50.0 V when placed across the capacitor. When a dielectric is...
  32. D

    Magnetic field for parallel plate capacitor

    Hello hello, What is the b-field for a parallel plate capacitor if the current J was found to be in the z-direction? I am told it will be in the z-direction as well. How so? Thanks so much!
  33. R

    More than one dielectric ibetween a parallel plate capacitor

    Hey, I am having some troubles with this question, the question asks me to calculate the capacitance of a parallel platecapacitor where the plates are separated by 3mm, and in between the are three layers of dielectric 1mm thick with different relative permitivities. Do I find the total by...
  34. M

    Help me - Force in x direction for a parallel plate electrode?

    Homework Statement I've two parallel plate as in attachment. The electrode area is A, when voltage are supply to the electrode, electrostatic force will be generated. Homework Equations Here, I would like to find the solution or equation of the generated force in x or y direction...
  35. E

    Electron in a parallel plate capacitor

    https://www.physicsforums.com/showthread.php?t=62593 I'm not quite sure how to obtain acceleration even after reading the suggestions. Help? Thank you.
  36. V

    Work Done on a Parallel Plate Capacitor

    Homework Statement An isolated 5.60 microfarad parallel-plate capacitor has 4.90 mC of charge. An external force changes the distance between the electrodes until the capacitance is 2.00 microfarads.Homework Equations W = Fd c = Q/VThe Attempt at a Solution My first instinct was to solve to the...
  37. tony873004

    Parallel plate capacitor and charge density

    Homework Statement A parallel plate capacitor with A=125 cm2 and d=1.25 mm is charged to a potential difference of 10.0 V. What is the charge density on each plate? Homework Equations V = \frac{{\sigma d}}{{\varepsilon _0 }}\,\,\,\, \Rightarrow \,\,\,\,V\varepsilon _0 = \sigma...
  38. S

    Parallel plate capacitor problem

    [SOLVED] Capacitor problem Problem: A parallel plate capacitor with adjustible plate separation d and adjustible area A is connected to a battery. The capacitor is fully charged to Q Coulombs and a voltage of V Volts. (C is the capacitance and U is the stored energy.) Give all correct answers...
  39. B

    Dielectric Help: Solving Parallel Plate Capacitor

    [SOLVED]Dielectric help Homework Statement To make a parallel plate capacitor, you have available two flat plates of aluminum (area = 180 cm2), a sheet of paper (thickness = 0.10 mm, k= 3.5), a sheet of glass (thickness = 2.0 mm, . k= 7.0), and a slab of paraffin (thickness = 10.0 mm, k=...
  40. S

    Area of a Parallel Plate capacitor. Pi*r^2?

    Hi, I was just going through a question in my Physics textbook today. In calculating the electric field (E=sigma/epsilon0) ... sigma = charge density = q/Area ... they have used the area as pi*r^2, I can't understand why this was done? shouldn't the area of the parallel plate capacitor be...
  41. X

    Calculating Vertical Deflection of Electron in Parallel Plate Setup

    Question: An electron with a velocity of 3.00x10^6m/s[horizontally] passes through two horizontal parallel plates, as in the attached diagram. The magnitude of the electric field between the plates is 120N/C. The plates are 4.0cm across. Edge effects are negligible. a) Calculate the vertical...
  42. S

    Parallel plate capacitor (voltage and charge relative to distance)

    Hi all. I'm struggling to understand something about PP capacitors. Let's say there is no battery connected to a PP capacitor. Why does the potential (V) INCREASE when the plates are moved farther apart? - we know that: dv = -Ed (in a constant E) however as d increases, E...
  43. T

    Calculate Surface Charge Densities for Parallel Plates

    2 infinite parallel plates separated by a distance s are at the potentials zero and V0. find the surface charge densities on the plates. I got the answer that it first calculate E and then as 1. x=o, Ex = σ / ε, then could know σ 2. x=s, Ex = - σ / ε ---> here's what I don't know. why...
  44. M

    Charge on Parallel Plate Capacitor

    I am having a really tough time providing an argument for myself over why the answer is true: The question: A parallel plate capacitor is attached to a battery that supplies a constant potential difference. While the battery is still attached, the parallel plates are separated a little...
  45. P

    Parallel plate capacitor and magnetic field

    Homework Statement A parallel plate air-filled capacitor is being charged as in figure. The circular plates have a radius of 4.0 cm, and at a particular instant the conduction current in the wires is .280 A. A. What is the displacement current density (jD) in the air space between the...
  46. L

    How Do You Calculate the Force in a Parallel Plate Capacitor?

    The problem is: Consider a parallel-plate capacitor with plates of area A and with separation d. Find F(V), the magnitude of the force each plate experiences due to the other plate as a function of V, the potential drop across the capacitor. Express your answer in terms of given quantities and...
  47. B

    How Do You Calculate the Potential Difference in a Parallel Plate Capacitor?

    A parallel-plate capacitor has an area of 4.77 cm2, and the plates are separated by 1.06 mm with air between them. It stores a charge of 403 pC. What is the potential difference across the plates of the capacitor? alright so i changed the area to .0477m^2. then i changed the distance between...
  48. N

    Parallel plate capcitor displacement current magnitude

    Homework Statement Use an integral form of the Gauss law to show how the magnitude of D inside the capacitor depends on the charge on the plates of a parallel plate capacitor and their area. Homework Equations Gauss \int{E.nda}=\frac{\rho}{\epsilon_{0}} \nabla.D=\rho where div...
  49. G

    Laplace equation for parallel plate condersers

    I've recently started studying Laplace's equation and it's solution under various simple circumstances in electrostatics. I tried to solve the equation for a parallel plate condenser system, but I couldn't meet the boundary conditions. I had two plates, one placed on xz plane at y=0 (with...
  50. M

    How Does Increasing Plate Separation Affect Capacitor Energy Storage?

    Homework Statement A parallel-plate capacitor has plates with an area of 445 cm2 and an air-filled gap between the plates that is 1.51 mm thick. The capacitor is charged by a battery to 575 V and then is disconnected from the battery. There is 4.311536113 x 10 ^-5 J of energy stored in the...
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