The document provides an overview of parallel plate capacitors, describing their structure, function, and factors affecting their charge storage. It outlines the role of the dielectric material, which impacts the type of capacitor, and explains how inserting a dielectric affects charge flow and voltage behavior. Common types of dielectric materials include mica, ceramic, and plastic film.

1. Parallel Plate Capacitors

2. • A such as µF, nF or
pFparallel plate capacitor
has two parallel plates
separated by an insulating
material
• A capacitor stores an
electrical charge between
the two plates
• The unit of capacitance is
Farads (F)
• Capacitance values are
normally smaller,

3. • capacitor construction
Dielectric
material
Plate 1
Plate 2
The dielectric
material is an
insulator therefore
no current flows
through the
capacitor

4. Factors Affecting Parallel Plate Capacitor

5. Storing a charge between
the plates
• Electrons on the left
plate are attracted
toward the positive
terminal of the voltage
source
• This leaves an excess of
positively charged holes
• The electrons are
pushed toward the right
plate
• Excess electrons leave a
negative charge
+ -
+
_
+ _

6. Parallel Plate Capacitor With Dielectrics

7. Types of capacitors
• The dielectric material
determines the type of
capacitor
• Common types of
capacitors are:
▫ Mica
▫ Ceramic
▫ Plastic film

8. What Happens When You Insert a
Dielectric?
• With battery attached, V=const, so more charge
flows to the capacitor

9. What Happens When You Insert a
Dielectric?
With battery disconnected, q=const, so voltage (for given q) drops

10. Capacitance of Parallel Plate Capacitor

11. Hey Friend,
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