Plates Definition and 591 Threads

Homework Statement a certain parrallel plate capacitator has a plate separation d and a potential difference between the plates of V. If the electric field between the plates is uniform a) What is the strength of the electric field F Homework Equations Coloumbs Law F=k(q1q2/d^2)...

If two conductive plates are placed close together separated by a suitable medium to act as a dielectric. It has an amount of capacitance that can accept a charge. ie a capacitor. one plate has an excess of electrons and is negatively charged the other is lacking in electrons being positively...

Homework Statement I have two parallell plates, they are separated a distance of 1 cm. The potential difference is 10kV. A 0.5 cm thick plastic plate lies between the two plates and has a relative permitivitty of 6. Calcualte E and D in the air and in the plastic plate. Homework Equations...

I'm trying to understand electrical potential and have a couple thought questions (Part A and part B) Part A Is it possible to calculate the potential of point between to infinite plates having the same positive charge? I know the electric field is zero between the plates but it would...

Homework Statement The electric field intensity at a point between two large parallel plates is 4.8 x 10^2 N/C. What does the electric field become as a result of each of the following changes, considered separately: a) when the amount of charge on each plate is tripled b) when the...

Homework Statement 1. In the manufacture of commercial license plates, a valid identifier consists of four digits followed by two eltters. Among all possible plate identifiers how many contain only the letters W, X, Y, or Z with a four digit number divisible by 5? 2. All the vertices of...

Homework Statement he electronic flash attachment for a camera contains a capacitor for storing the energy used to produce the flash. In one such unit, the potential difference between the plates of a 705 µF capacitor is 320 V. (a) Determine the energy that is used to produce the flash in...

I would like to ask for your help to solve a problem concerning the well-known case of an electron inside a well of defined potential. I've already studied the case of the 1dimensional infinite potential well, but my case is a bit more complicate since it includes a 2D space and different...

I need to calculate the strain energy for a clamped circular plate by the governing equation in polar coordinates.. Load is distributed uniformly over the entire area.. And displacement is in transversal direction to the plate,.. please do help me...

Does anyone know how to calculate the capacitance of two circular plates having different dimensions? Say the top capacitor plate has a diameter d1 and the bottom capacitor plate has a larger diameter d2 and air is in between the bottom and top plate. So, it is not a standard parallel plate...

I just want to know if I'm even given enough information in this question to generate an answer. I don't need an actual answer. Thanks. "An electron is fired from a negative plate towards a hole in a positive plate. It then passes between two parallel plates that are 5 cm long and 3 cm...

[SOLVED] Electric Field Between Two Parallel Plates My textbook says that the magnitude of the electric field at any point between two plates (except near the edges) depends only on the magnitude of the charge on each plate. For example, if the magnitude of the electric field between two...

Homework Statement A small sphere with mass 1.50g hangs by a thread between two parallel vertical plates 5cm apart. THe plates are insulating ahnd have uniform surface charge densities + and - \sigma. The charge on the shpere is q = 8.90 x 10^-6 C. What potential difference between the...

Homework Statement Question: an electron with a velocity of 5.0x10^{}6 m/s is injected into a parallel plate apparatus through a hole in the positive plate. it moves across the vacuum between the plates. what would the potential difference have to be in order to stop the electron 25% of the...

Capacitance= (permitivity x Area of overlap)/ distance between two plates Why is capacitance inversely proportional to the distance between two plates? I understand that C=Q/V. So capacitance is the amount of charge it takes to change the potential difference between the two plates by 1...

Homework Statement An object of mass m carries a charge q and is supsended by a thread between the vertical plates of a parallel plate capacitor. The plate separation is d. If the thread makes an angle \theta with th evertical, what is the potential difference between the plates? Homework...

Homework Statement Two oppositely charged parallel plates, 13.0 cm apart, have a uniform electric field between them. Vb − Va = +25.0 V. An electron with a mass of 9.11 × 10−31 kg and a charge of −1.60 × 10−19 C is released from rest at plate a. Calculate the speed of the electron when it...

[SOLVED] Deflection of Plates Answer choices: A) 63V B) 112V C) 520V D) 642V E) 882V y = .5cm = 5 x 10^-3 m x = 3cm = 3 x 10 ^-2 m angle = 10 degrees acceleration(a) = ((1.602 x 10^-19) (15000))/(9.11 x 10^-31) = 2.6 x 10^15 m/s^2 Force(F) = 2.6 x 10 ^15(9.11 x 10^-31) =...

[SOLVED] Charged parallel plates, proton and electron released simultaneously Homework Statement Two parallel plates 0.700 cm apart are equally and oppositely charged. An electron is released from rest at the surface of the negative plate and simultaneously a proton is released from rest at...

I am having some trouble getting started with this problem. Do I want to use kq/r^2 at all or should I be doing something else? The problem is: Two point charges, Q1=-6.7 microCoulombs and Q2= 1.3 microcoulombs, are located between two oppositely charged plates. (The positively charged...

Homework Statement A parallel plate capacitor with the separation between the plates as 'd' has its lower plate dipped in water. Before dipping, the lower plate has charge Q, while the upper plate has charge 2Q. Let K be the dielectric constant of water. What will be the final charge on the...

Homework Statement Two 10-cm-diameter metal plates are 1.0 cm apart. They are charged to +/-12.5 nC. They are suddenly connected together by a 0.224-mm-diameter copper wire stretched taut from the center of one plate to the center of the other. A)What is the maximum current in the wire...

My teacher marked my answers to this assignment as wrong. He wouldn't explain why, so I hope you guys will be kind enough to point me in the right way :smile: The reading of the sensitive ammeter was found to be 0.002mA. Radon-220 isotopes are introduced through the valve and it releases...

two parallel plates of area A is separated by a distance d. One plate has positive charge distribution with area chrage density \sigma and the other plate has an area charge density -\sigma how much work does it take to move the plates 2d? W=Fd=QEd' i'm not sure what to use for the Q or the...

A dielectric is inserted between the plates of a capacitor. The system is charged and the dielectric is removed. The electrostatic energy stored in the capacitor is 1. greater than 2. the same as 3. smaller than it would have been if the dielectric were left in place. U= 1/2 (K)EAd E^2 K=...

i have a project of making electric stove for that top portion a plate like cover for transfering heat over 500degree and nonconductive material in thin of 2mm and dia over 160mm the material whatever may be with good surface.This is good product for cooking with low cosuption of power, for ten...

No numbers here - purely conceptual. Two thin plates carry total surface charge densities of \sigma and \sigma_{1} respectively. An uncharged conducting slab is placed in between the charged plates, and then above \sigma. What are the induced charged densities on the surfaces of the...

No numbers here - purely conceptual. Two thin plates carry total surface charge densities of \sigma and \sigma_{1} respectively. An uncharged conducting slab is placed in between the charged plates, and then outside \sigma. What are the induced charged densities on the surfaces of the...

which statements are true for two oppositely charged, isolated parallel plates: C=capacitance, U=stored energy, (Q and -Q =charged on the plates). Note: isolated plates can not lose their charge. a. when the distance is doubled, U increase. b. inserting a dielectric increases Q c. when...

Homework Statement An electron starts from one plate of a charged closely spaced (vertical) parallel plate arrangement with a velocity of 1.63 x 10^4 m/s to the right. Its speed on reaching the other plate, 2.10 cm away is 4.15x10^4 m/s I got parts a and b - part C is what I'm having...

Hello. I can't understand that why electric field lines are radial between two parallal plates but curved at the end.? what is the reason.

hi, We see theoretical discussion of Electric field inside the charged capacitor is confined in the space between the plates and E.d = potential difference between plates. Considering the battery terminal(let us say positive terminal), wire and left plate or top plate, being in the same...

1.Two plates placed a distance "D" apart. One charged +Q, the other -Q. An uncharged slab of metal is placed between the plates. 2. Does this slab change the electric field outside or between the plates (but outside the slab)? Do forces exerted on particle sitting between the plates (but...

1. The magnitude of the electric field between two plates of a parallel plate capicitor is 4.7 x 10^4 N/C, if the charge on each plate increases by a a factor of 3, what happens to the electric field? increase by a factor of 3 or 9? decrease by a factor of 3 or 9? not effected? 2...

I heard that two flat conducting parallel plates have the property that electric field at any point between them, is uniform, and of constant magnitude. I was wondering how this was possible. For example, a test charge closer to the positive plate conpared with a test charge closer to the...

A point charge q = −2.40 nC is initially at rest adjacent to the negative plate of a capacitor. The charge per unit area on the plates is 4.50 µC/m2 and the space between the plates is 6.50 mm. (a) What is the potential difference between the plates? kV (b) What is the kinetic energy of...

Hey guys, I not similar to autocad at all and you know now its really difficult to me. I can even draw these stuff. If some one can help me out with these sample plates I will be so glad. *Complete the top view on the space provided: http://rapidshare.com/files/29181074/152222.dwg.html*draw...

Homework Statement http://aycu16.webshots.com/image/13135/2004772066267823450_rs.jpg The mass of the ball is 40 milligrams, the applied potential difference is 480 V and the plate separation is 6 cm. If the string hangs at an angle of 20deg to the vertical, determine the charge on the...

Question Two glass plates 10.0 cm long are in contact at one end and separated at the other end by a thread 0.0500 mm in diameter. Light containing the two wavelengths 400 nm and 600 nm is incident perpendicularly. At what distance from the contact point is the next dark fringe? Relevant...

I just am trying come up with a hypothesis regarding the plates in a CRT system? How do they become charged? Looking at when an electron travels between the two plates, say the plates are on the top and bottom and the top plate is positively charged and the bottom is negatively charged, we...

Would plates that are not marked "microwave safe" explode in a microwave oven or crack slowly?

Hi, I'm in the process of completing my physics coursework (A-level) and have run into a bit of a problem: I am trying to find a general equation for a plate capacitor, where the plates aren't parallel. I've always seen the parallel plate capacitor equation: C = \frac {\epsilon A}{d}...

Homework Statement The electrostatic potential energy of a system of point charges q1 = 1 µC, q2 = 2 µC, and q3 = 3 µC at the corners of an equilateral triangle whose side s = 30 cm is a. 1.10 J b. 0.990 J c. 0.631 J d. 0.330 J e. 0.123 J Homework Equations See...

Homework Statement A small sphere with mass 2.90 g hangs by a thread between two large parallel vertical plates 0.05 m apart. The plates are insulating and have uniform surface charge densities + \sigma and - \sigma . The charge on the sphere is q = 9.70×10^6 C. What potential difference...

Homework Statement An infinite plane of charge with surface charge density sigma = 8.00 nC/m^2 lies in the yz plane at the origin, and a second infinite plane of charge with surface charge density sigma = -8.00 nC/m^2 lies in a plane parallel to the yz plane at x = 4.00 m. The electric field...

Homework Statement A sphere of radius 8.0 cm carries a uniform volume charge density rho = 500*10^-9 C/m^3. What is the electric field at r = 3.0 cm? a.36.0 N/C b.230 N/C c.140 N/C d.565 N/C e.450 N/C Homework Equations E = (k*Q*r)/(R^3), where...

helo :smile: have a proble here can someone help me out? supouse i know the surface of the plates of a capacitor ( that are flat surfaces place one in front of anougthere ) the distance bethwin them and the charge. how do i calculate the force that apears betwin them?

I'm writing a report about using numerical techniques to solve a simple parallel plates capacitor problem. Would it be proper to say that there is no closed form solution to Lapalces equation when dealing with fringing effects? Isn't this the reason why we use numerical techniques to solve...

Hello, Quick question. If you have a parallel plate capacitor charged with X volts. Is there a detectable E field outside the plates at all or only between the plates? Thanks, Jason O

Hi, Why does C=Eo*Er*(A/d) only work for a parallel plate geometry? Which part of it dictates its exclusivity to a parallel geomtery? Why can't I make the plate separation, d the distance between two adjacent (coplanar) plates and it give me the capacitance of that geometry? Any links...