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2C studying lab

studying for final

To miniaturize ca p acitors, y et maintain ca p acitance Purpose of Dielectrics py p the space between the plates of a capacitor are filled with a dielectric material
What is the purpose of adding a dielectric to a capacitor? Dielectric is placed between two conductors to create a capacitor. It keeps the carriers of electric charge (electrons or ions) from moving from one conductor to another, thus maintaining difference of potentials.
What does an inductor do? An inductor allows passage of DC current but resists AC. while a capacitor's purpose is to store voltage, an inductor's purpose is to store current. Charges cant move freely through
What are conductors? objects in which charges can move freely through
Power dissipated by a resistor P sub L (loss) = I^2 * R (power lost in a conductor)
Power Transmitted P sub T = IV
To find capacitance in parallel plate capacitor what is the formula for C? C = Epsilon naught * Epsilon sub R * (A/d)
Units for capacitance? Farads
Units for farads? second/ohm , C^2/Nm , C/V , J/V^2
What is AC current? alternating current that reverses at random times
What is DC current? Direct current. Pos and Neg terminals with (+) and (-) always, respectively.
LCR meter measures what and in what units? Capacitance in Farads
DMM measures what and in what units? Resistance in Ohms
What is the constant relative permittivity? epsilon sub R
What is resistance proportional to? Length of wire
What is Kirchoffs Law? 1) Iin = Iout 2)Sum of V difference in ANY loop = 0
What is resistance? measurement of how much an object resists current flow.
Capacitors store what kind of energy? Electric
how are capacitors determined? Geometric effect. (area, diameter, dielectric)
What is Faraday's Law? Magnetic Flux changes so
what is the dielectric constant and its formula K = C of dielectric / C of vacuum
what is C of dielectric constant formula C dielec = K * epsilon naught * (A/D)
What is dielectric constant of a vacuum 1
What is dielectric constant of air 2
Created by: kag001