a) One early customer concern about electric cars was the chemical longevityof the battery. An alternative would be to store energy in a "super"capacitor (a large capacitor).i) A small electric car stores 5.7x107J in a fully charged battery. Whatvolume would a vacuum-filled capacitor have to have in order tostore this much energy? Assume that safety regulations limit theelectric field in air to 0.8x10° V/mii) How could we effectively increase the capacitance without changingeither the area or plate separation?b) Consider the following circuit:AV,=3 V+V3=4 VV2=5 V -/213R3=1 kNR-600 Ω ΣR,=800 Ni) Use Kirchhoff's current rule to find an equation relating the currentsat Junction A.ii) Write an equation applying Kirchoff's voltage rule to the right loop.Given that I, = 1.17 mA, determine the current l2.iii)

Given: Electric fieldmax=EmaxEmax=0.8×106 VmV=Emax.dV=.8×106dεo=8.84×10-12C2/m2.NE=5.7×107 JNow for…

a) One early customer concern about electric cars was the chemical longevity of the battery. An alternative would be to store energy in a "super" capacitor (a large capacitor). i) A small electric car stores 5.7x10'J in a fully charged battery. What volume would a vacuum-filled capacitor have to have in order to store this much energy? Assume that safety regulations limit the electric field in air to 0.8x10° V/m i) How could we effectively increase the capacitance without changing either the area or plate separation?

a) One early customer concern about electric cars was the chemical longevity of the battery. An alternative would be to store energy in a "super" capacitor (a large capacitor). i) A small electric car stores 5.7x10'J in a fully charged battery. What volume would a vacuum-filled capacitor have to have in order to store this much energy? Assume that safety regulations limit the electric field in air to 0.8x10° V/m i) How could we effectively increase the capacitance without changing either the area or plate separation?

Delmar's Standard Textbook Of Electricity

7th Edition

ISBN:9781337900348

Author:Stephen L. Herman

Publisher:Stephen L. Herman

Chapter19: Capacitors

Section: Chapter Questions

Problem 3RQ: A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted...

See similar textbooks

Similar questions

4. In what form is the energy of a capacitor stored?
A capacitor uses air as a dielectric and has a capacitance of 3 F. A dielectric material is inserted between the plates without changing the spacing, and the capacitance becomes 15 F. What is the dielectric constant of this material?
Three capacitors having capacitance values of 20F,40F, and 50F are connected in parallel to a 60 - Hz power line. An ammeter indicates a circuit current of 8.6 amperes. How much current is flowing through the 40F capacitor?
Can current flow through a capacitor?
Answer the questions completely. Thanks How does a Capacitor store energy? How will we know if the capacitor is already fully charged? What is the role of a capacitor in a certain circuit? What is the role of dielectric in a capacitor? How does dielectric breakdown occurs?
Please determine if each question is True. If false, please explain why a) A fully charged capacitor behaves identically to a break in the wire (i.e. no current passes through it).b) An uncharged capacitor behaves identically to a break in the wire (i.e. no current passes through it).c) Whether charging or discharging a capacitor, the charge on the capacitor can be modeled using an exponentiallyincreasing function.
A paper dielectric plate capacitor is to be experimentally tested. The metal plates and the paper material between said plates are all 20 cm in radius and subjected to 10V dc in the test. How much is the capacitance does this capacitor have in picofarads (pF), if the paper material between plates used is 2 cm thick? Input answer in 4 decimal places and in pF. Note: Relative permittivity of the paper ( εr ) : 0.4225
What is your understanding about inductors and capacitors? References: https://www.youtube.com/watch?v=vZXT4A7lmhE
A capacitor is made from two flat parallel plates placed 2 mm apart, .and its capacitance at vacuum is 10-12- F , if 200 volt applied in between then a Dielectric material was entered and its Dielectric constant Is 49 , Calculate : a) the new value of capacitance after the entrance of the Dielectric b) what is the value of charge on Dielectric material surface c) the polarization p of the Dielectric material d) calculate the displacement and the field inside the Dielectric
Refer to the diagram below. Compute the total capacitance, voltage and charge across each capacitor given that the total voltage is 120V. Please help, I've been getting ridiculously long decimal values and I don't know what to do.
Given:Vb = 100 voltsR = 10000 ohmsC = 200 μFAssuming that after a long period of time, the switch is flipped from position "A" to position "B" at t=0. How much is the energy stored in the capacitor after t=∞?
2. A parallel plate capacitor with a plate area of 0.13 square meters separated by 1 mm is charged to 9 Volts by a battery, which is then disconnected. The plate separation is then increased to 40 mm.A. Using the expression for the capacitance of a parallel plate capacitor, what do you expect the new potential difference across the plates to be after the increase?B. Suppose you measure the potential difference across the plates after the separation and find it to be 30 V (this should be very different from what you found in part A). This unexpected result can be explained by the effects of “stray capacitance” with nearby objects. Assuming that the stray capacitance can be modeled as a capacitor connected in parallel with the parallel plate capacitor, find the value of this stray capacitance.