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# Capacitors

### Questions of Capacity

Please see attachment: two questions 12, 13 with their figures. 12. In figure 25-31, the battery has a potential difference of V = 10.0 V and the five capacitors each have a capacitance of 10.0 uF. What is the charge on (a) capacitor 1 and (b) capacitor 2? 13. In figure 25-29, a potential difference of V = 100.0 V is app

### Two problems on capacitors

1. Two parallel plates of area 100cm^2 are given charges of equal magnitudes 8.9X10^-7 but opposite signs. The electric field within the dielectric material filling the space between the plates is 1.4X10^6 V/m. (a) Calculate the dielectric constant of the material. (b) Determine the magnitude of the charge induced on each dielec

### Uncharged Capacitor Problem

This is a simple review request. The problem states: Each of the uncharged capacitors has a capacitance of 25.0 microF. A potential difference of V = 4200 V is established when the switch is closed. How many coloumbs of charge then pass through meter A? I am not sure I am taking proper note of the "uncharged" state of

### Calculating Capacitance

The problem states: You have two flat metal plates, each of area 1.00 m^2, with which to construct a parallel-plate capacitor. (a) If the capacitor of the device is to be 1.00 F, what must be the separation between the plates? (b) Could this capacitor actually be constructed? Please review my solution below and correct

### Capacitor and DC Triplers

When a manufacturer makes a cap they make them for DC or AC right? So how make to have ratings of 16v or 30V then at whatever microfarads?

### A parallel plate capacitor with a nonuniform dielectric

A parallel plate capacitor with a nonuniform dielectric The dielectric of a parallel plate capacitor has a permittivity that varies as ero+ax, where x is the distance from one plate. The area of a plate is A, and their spacing is s. (a) Find the capacitance. (b) Show that, if er varies from ero to 2ero, then c is 1.44 tim

### Two capacitors are identical

Two capacitros are identical, except that one is empty and the other is filled with a dielectric (k=4.50). The empty capacitor is connected to a 12.0-V battery. What must be the potential difference across the plates of the capacitor filled with a dielectric such that it stores the same amount of electrical energy as the empty c

### Capacitance of Parallel Plate Capacitor

A parallel plate capacitor has a capacitance of 7.0 microFarads when filled with a dielectric. The area of each plate is 1.5 m^2 and the separation between the plates is 1.0 x 10^-5 m. What is the dielectric constant of the dielectric?

### Energy Ratio When Capacitors Are in Series and Parallel

Electrostatic Energy. See attached file for full problem description.

### Reduce the circuit for the least number of elements.

Reduce the circuit for the least number of elements. There is no left vertical side. On the top horizontal side is a 10 Ohm resistor. The line in the center consists of 2 6H inductors in parallel connected to a single 7H inductor that connects to the bottom horizontal side. The right horizontal side consists of a 10 micro Fa

### E&M electrostatics and Magnetostatics in magnetic materials

Consider the following parallel plate capacitor Givens: top plate 1 meter wide by 1 meter deep by 10 mm thick bottom plate 1 meter wide by 1 meter deep by 10 mm thick gap 12 mm applied voltage 1000 volts containing different materials inside the gap as follows: a) 12 mm of vacuum (Ke = 1) b) 1 mm of vacuum, 10 mm of

### Charge on the capacitors when reconnected oppositively.

Two capacitors, with capacitance 4.20*10^-6 F and 5.90*10^-6 F, are connected in parallel across a 660-V supply line. The charged capacitors are disconnected from the line and from each other, and then reconnected to each other with terminals of unlike sign together. a) find the final charge on the 4.20*10^-6 F capacit

### Parallel Plate Capacitors

A parallel plate capacitor is filled with a dialectric whose dialectric constant is K, increasing its capacitance from C_1 to KC_1. A second capacitor with capacitance C_2 is then connected in series with the first, reducing the net capacitance back to C_1. What is C_2? Express your answer in terms of K, C_1 and constants.

### Compare and contrast various internal strategies

Based on the assigned scenario, answer the following questions: What is the situation? What challenges exist? What opportunities exist? What is the problem? Is there a problem? Is it worth solving? (Process) Based on the assigned scenario, answer the following questions: What does the ideal end-state look like? What are the

### Capacitor Question

Please help with the following problem. Provide step by step calculations. A capacitor, C1, is charged using a 6.3 V battery. C1 has a capacitance of 3.55μF 1) When this capacitor/battery circuit reaches equilibrium, what is the charge on each place of the capacitor? 2) When C1 is fully charged, the battery is remove

### Sum of energies stored in capacitors

Two capacitors (C1 and C2) are connected in series. Show that the sum of the energies stored in these capacitors is equal to the energy stored in the equivalent capacitor. [Energy stored in a capacitor can be expressed as q^2/(2C)] Please include diagram.

### Series and Parallel Capacitors

(See attached file for full problem description) A 3.00 uF and a 5.00 uF capacitor are connected in series across a 30.0 V battery. A 7.00 uF capacitor is then connected in parallel across the 3.00 uF capacitor. Determine the voltage across the 7.00 uF capacitor. Please include a diagram of the circuit.

### Capacitors: Battery Potential and Change in Energy

See attached file for full problem description. Two identical capacitors are charged to different potentials. Define a battery potential and change in energy in the system.

### A parallel plate capacitor with plates of area A and plate separation

A parallel plate capacitor with plates of area A and plate separation d has the region between the plates filled with two dielectric materials (&#949;1 and &#949;2) as shown in the figure. Determine the capacitance and show that when &#949;1= &#949;2= &#949; your result becomes the same as that for a capacitor containing a singl

### Complex coupled circuits

The circuit configuration chosen is that of a pair of tuned circuits which are coupled together and both primary and secondary are tuned to the same frequency. The primary has an inductance of 1 mH and the secondary has an inductance of 1.5 mH. The resistance of the primary is 10 ohms and the secondary 12 ohms. the secondary is

### Connecting Three Capacitors

1.) You have three capacitors and a battery. How should you combine the capacitors and the battery in one circuit so that the capacitors will store the maximum possible energy? 2.) Because the charges on the plates of a parrallel-plate capacitor are of opposite sign, they attract each other. Hence, it would take positive wo

### Capacitors and Oscilloscopes

Design a circuit to determine the capacitance of a capacitor using a known resistance, an oscilloscope, a function generator, and an unknown capacitor (explicitly show all the components in your circuit diagram and explain how you would set it up). Discuss the limitations of the method. In addition, sketch the expected output on

### A small plastic ball of mass is suspended between capacitor plates: What is the magnitude of the charge on each plate?

A small plastic ball of mass 6.39 x 10-3 kg and charge +0.164 C is suspended from an insulating thread and hangs between the plates of a capacitor (see the drawing). The ball is in equilibrium, with the thread making an angle of 30.0° with respect to the vertical. The area of each plate is 0.01215 m2. What is the magnitude of

### Electrostatics: Coulomb's law, polarization, capacitance.

1. If you turn on a faucet so that a thin stream of water flows from it, you may demonstrate to yourself that a charged object (such as a plastic comb) brought near it will deflect the water. The force is always attractive. Explain why this happens, in terms of the polarization of water. Draw a diagram to illustrate. 2. Supp

### Elotrostatics: Energy of capacitors in series and parallel

There is an attachment of what the problem is. I also wrote a little bit of what I tried. --- Consider the group of capacitors shown in Figure 21-39, where C1 = 13 µF and C2 = 6.4 µF. Terminals A and B are connected to a 9.0 V battery. Find the energy stored in each capacitor. (See diagram in attachment) ---

### Circuits with capacitors

The figure (attached) shows a simplified circuit for a photographic flash unit. This circuit consists of a 9.0 V battery, an R = 45.0 k resistor, a 140 µF capacitor, a flashbulb, and two switches. Initially, the capacitor is uncharged and the two switches are open. To charge the unit, switch S1 is closed; to fire the flash, sw

### Capacitance: Parallel plate capacitor, series and parallel combinations, switch for a given charging potential

Please see attached files. Please place step by step solutions and answers on separate piece of paper and give answer please. Draw pictures if needed. PLEASE DO all questions, again show all math, diagrams, etc. and only first 5 problems 1. Figure 25-19 shows plots of charge versus potential difference for three parallel

### Capacitance and Voltage

(a) Determine the equivalent capacitance between points a and b for the combination of capacitors shown (see attached). (b) Determine the charge on each capacitor and the voltage across each if Vab= V.

### Circuits - Charge and Voltage

A potential difference of 750 V is applied across two capacitors of capacitance 5 uF and 10 uF in series. Find the charge on each capacitor and voltage across each.

### What is the equivalent capacitance of the two capacitors

Two capacitors, one 6.6 µF the other 29 µF, are connected in parallel across a 12 V battery. What is the equivalent capacitance of the two capacitors? And what is the charge stored on each capacitor? Q 6.6 µF = Q 29 µF: =