1. The ideal model of two oppositely charged conducting plates with surface charge densities says that...

1. The ideal model of two oppositely charged conducting plates with surface charge densities says that there is a constant electric field between the plates and zero field outside. How does your model differ from the ideal model? Why does it differ?

2. Create your own question about electric fields and/or potentials that could be answered using this applet.

The “Charges and Fields” applet here: https://phet.colorado.edu/en/simulation/charges-andfields.

Expert Solution

1.

The ideal model takes the assumption that the space in between the plates is uniform. That is, there is no other potentials, or no dielectric material to ploarize. If there is an extra potential, the field will vary. That is, dielectrics responds to the field that is produced between the plates in the form of polarization. If the dielectric is not uniform or its permittivity varies with distance within the plates, field also varies. That is why the ideal condition is said to be not possible at all.

2.

Q1. A parallel plate capacitor is formed by using two parallel plates. We measure the capacitance with and without a dielectric of known permittivity. What will be the result? Are the two capacitances same? Why?

genius_generous answered 2 years ago

Consider two oppositely charged, isolated parallel plates separated by distance D, with capacitance C, charge Q,...

Consider two oppositely charged, isolated parallel plates separated by distance D, with capacitance C, charge Q, and stored energy U. D is small compared to the dimensions of the plates. For each statement below, select "True" or "False". 1. Because of energy conservation, inserting a dielectric leaves U unchanged. 2. When D is halved, Q stays the same. 3. Inserting a dielectric decreases C. 4. When D is doubled, U increases. 5. When D is doubled, C is doubled. 6....

Two capacitor plates are equally and oppositely charged. They are separated by 1.5cm . An electron...

Two capacitor plates are equally and oppositely charged. They are separated by 1.5cm . An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where do the electron and proton pass each other? Give your answer as a distance from the positive plate.

Two capacitor plates are equally and oppositely charged. They are separated by 1.4cm . An electron...

Two capacitor plates are equally and oppositely charged. They are separated by 1.4cm . An electron is released from rest at the surface of the negative plate and, at the same time, a proton is released from rest at the surface of the positive plate. Where do the electron and proton pass each other? Give your answer as a distance from the positive plate.

Two parallel plates, each charged equally and oppositely to the other, are separated by 8.9500 cm....

Two parallel plates, each charged equally and oppositely to the other, are separated by 8.9500 cm. A proton is let go from rest at the positive plate's surface and, at the same time, an electron is let go from rest at the negative plate's surface. What is the distance between the negative plate and the point where the proton and the electron go by each other? Note: unlike most questions, this one will need your answer correct to 5 significant...

A uniform electric field exists in the region between two oppositely charged parallel plates 1.70cmapart. A...

A uniform electric field exists in the region between two oppositely charged parallel plates 1.70cmapart. A proton is released from rest at the surface of the positively charged plate and strikes the surface of the opposite plate in a time interval 1.45

Which statements are true for two oppositely charged, isolated parallel plates: C=capacitance, U=stored energy (Q and...

Which statements are true for two oppositely charged, isolated parallel plates: C=capacitance, U=stored energy (Q and -Q = charge on the plates). Note: Isolated plates can not lose their charge. a) Inserting a dielectric increases Q. b) True False Increasing the distance increases the Electric field. c) True False When the distance is halved, Q stays the same. d) True False Inserting a dielectric increases C. e) True False Inserting a dielectric decreases U. f) True False When the distance is doubled, U increases. g)...

Two parallel conducting plates are oriented in an ? − ? coordinate system. The plates are...

Two parallel conducting plates are oriented in an ? − ? coordinate system. The plates are separated by a distance ? = 0.05 ?, and the origin of the coordinate system is halfway between the plates. The plate separation is very small compared to the size of the plates. The left plate is at a potential ?L = 50 ?, and the right plate is at a potential ?R = 10 ?. 1. A proton at the origin begins at...

Two charged droplets of toner ink behave as two shells of uniform surface charge density. (Toner...

Two charged droplets of toner ink behave as two shells of uniform surface charge density. (Toner is an insulating material, not conductive.) The two drops have total charge qi, radiusRi, and centre positionri,i= 1,2. Assuming the drops do not overlap, derive the electric potential, V(r), everywhere inside and outside the spheres. Is the voltage (potential) inside shell 1 constant?

A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the...

A pair of charged conducting plates produces a uniform field of 12,000 N/C, directed to the right, between the plates. The separation of the plates is 40 mm. An electron is projected from plate A, directly toward plate B, with an initial velocity of v0 = 2.0 x 107 m/ s, as shown in the figure. The velocity of the electron as it strikes plate B is closest to a. 2.1 x 107 m/s b. 1.8 x 107 m/s c....

A solid non-conducting cylinder is evenly charged with a constant volume charge density, ρ (the charge...

A solid non-conducting cylinder is evenly charged with a constant volume charge density, ρ (the charge is evenly distributed throughout the volume of the cylinder). The cylinder has a radius, R, and length, ℓ. (a) Use Gauss’s Law to find an equation for the electric field strength, ???, at a radius, ? < ?. (b) Use Gauss’s Law to find an equation for the electric field strength, ????, at a radius, ? > ?. Note: ? = ?⁄?????????, assume the...

Question