Lab 5 - Capacitors finished

What is the equation thst represents the relationship between charge, capacitance and voltage for a capacitor.

Describe the advantages and disadvantages of supercapacitor versus battery.   Explain the principle operation of Pseudo-capacitor and its advantages -disadvantages versus capacitors.

Fill in the blanksadd, capacitance, charge capacity, dielectric, dissipate, electrical circuits, , passive, plates,proximity, storesA capacitor is a 1 …………. two-terminal electrical component that 2 ……… potential energy in anelectric field. The effect of a capacitor is known as 3. …………... While some capacitance exists betweenany two electrical conductors in 4. …………… in a circuit, a capacitor is a component designed to 5.…… capacitance to a circuit. The capacitor was originally known as a condenser.The physical form and construction of practical capacitors vary widely and many capacitor types are incommon use. Most capacitors contain at least two electrical conductors often in the form of metallic 6.………… or surfaces separated by a 7. ………medium. A conductor may be a foil, thin film, or anelectrolyte. The nonconducting dielectric acts to increase the capacitor's 8. ………… ………. Materialscommonly used as dielectrics include glass, ceramic, plastic film, paper, mica, and oxide…

a. Show how you would connect all five capacitors to get a maximum capacitance and find the maximum capacitance in terms of C. b. Show how you would connect all five capacitors to get a minimum capacitance and find the minimum capacitance in terms of C.

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A 40 micro-farad capacitor is connected in series with a 40 ohm resistor. If the voltage is220-V, what is the current?

In the first method to write the equation, why is the capacitor value not included in the equation at first?

For the circuit shown in Figure (4.a): i) Find the voltage across the capacitor in polar form. ii) Draw the phasor diagram relationship of Vc and Vs. iii) Is this circuit pre-dominantly inductive or capacitive? Why?

Describe in words how the charges behave on capacitors which are in a parallel circuit. How do the individual capacitor charges compare to the charge of the equivalent capacitor?

Draw schematics to illustrate why the capacitance is formed in DoubleLayer (DL) in Electrostatic Double-Layer Capacitor (EDLC). State thecapacitance’s difference between Double Layer (DL) and conventional capacitors?

Capacitor voltage drops almost linearly during discharge and below half voltage maximum it doesn’t provide significant power. If we discharge a fully charged capacitor to its half voltage maximum, how much energy can be discharged compared to a full-discharged capacitor (show your calculation)?