Lesson 5 Capacitance Flashcards
is a passive device for storing electric charges.
Capacitor
The simplest type of capacitor
consists of _____________________ separated
from each other by a thin sheet
of insulating material or
dielectric.
Two parallel conducting plates
Insulating Material
Dielectric
Classification of Capacitors
Parallel Plate Capacitors
Cylindrical Capacitors
Spherical Capacitors
This type of capacitor has two
parallel charging plates are
separated by a dielectric that
contains charges. The
capacitance is directly
proportional to the area of the
plates as well as to the distance
between these plates.
Parallel Plate Capacitors
have different construction with
inner and outer cylindrical
structures. The capacitance of
a cylindrical capacitor varies
directly with its length. Longer
capacitor provides higher
capacitance, whereas a
shorter provides a lower value.
Cylindrical Capacitors
have an internal spherical
structure and it is one of the charged bodies of
the capacitor. The other charged body is the
outer spherical structure that covers the internal
sphere. The capacitance of this capacitor
varies directly with its overall radius. Increasing
the radius of this type of capacitor will enlarge
the spherical surface.
Spherical Conductor
is the ability of a capacitor to
store charges.
Capacitance
is mathematically defined as the ratio
of the amount of charge q in one plate to the
potential difference V between the plates
Capacitance
The capacitance of a parallel plate capacitor is
affected by the following factors:
The Area of the Plate
The Distance between the plates
The Dielectric Between them
The bigger the area of the
plates, the ____________the capacitance
greater
The closer the plates to each other, the __________ the capacitance
greater
The capacitance is determined in terms of
the material’s _______________________ є – the higher
the є, the ________ the capacitance.
Permittivity Constant, greater
Capacitance in a series Constant
Charge (Q)
Capacitance in a Series Total Voltage
Summation of all the Voltages