2. What type of energy is stored up in a capacitor? In a storage cell? In an inductive circuit? Why are capacitors not used in place of secondary batteries?

Consider the large inductor in Figure 3 with given number of turns N, core permeability μ, core cross section area A, and core diameter are given. Note that the core length l is equal to π times the core diameter. Answer the questions and pick an answer from the given choices. The coil is made up of copper wire that has a cross section area of 1 cm2, and the length of each turn is nearly equal to 1 m. Find the resistance of the coil. (Assume an operating temperature of 20o C). 1) 180.2 mΩ 2) 17.2 mΩ 3) 1.2 Ω 4) 850.5 mΩ

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What are very rough estimates of the graphs of capacitor voltage vs. time and resistor voltage vs. time while charging and discharging?

What is the result of increasing the frequency of the applied voltage to a capacitor? A. Decreased capacitive reactance. B. Decreased current flow. C. Increased capacitive reactance. D. Increased voltage. 9.

Three 20uF capacitors are connected in series with each other. A 1k ohm resistor and an LED connected in series to each other as well, but branched in parallel to all three capacitors. How long would the LED stay lit after power is removed? What current would flow through it during the charge cycle if VT=9v?

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…

1. What is an Inductor? 2. How does the inductor work?

Do we need to take into account the internal resistance of the voltmeter when discharging the capacitor?  Why or why not?

What is a dielectric material, and what does it do? a. What are 3 ways capacitance can be increased by changing the materials?