Transcript Electricity Notes

Electricity
Conductors and Insulators
• Conductors are materials that
allow electricity to flow easily
Examples: metal, water, air and
some chemicals
• Insulators are materials that
resist the movement of electricity
Examples: rubber, wood, plastic,
cloth
Electricity Notes
There are two kinds of electricity
AC-Alternating current where
the charges move back and
forth (wall outlet)
DC-Direct current where the
charges flow in one direction
(batteries)
Kinetic Energy is energy of
movement
Voltage
• Voltage (volts) measures the force of
electrons that flow in a circuit
Amperes
Amperes (amps) measure the number of
electrons that pass one point within one
second. Amperes measure electric current
Wattage
Watts= amperes x volts
Circuits
• Two types of circuits-Parallel and
Series
• Parallel circuits provide more
than one path for electrons to
flow.
• Series circuits have only one path
for the electrons to flow.
Series Circuit
Battery
Switch
Light Bulb
Parallel Circuit
Switch
Battery
Light Bulbs
Resistance
• Insulators resist the
movement of electricity
or the movement of
electrons. This
resistance is measured
in Ohms
Bulb
Filament
Support
Lead-in Wires
Base
What Makes a Light Bulb Light?
Electricity goes in one lead wire and
travels up to the very thin filament wire
cause it to glow from the electricity
running through it.
The electricity then runs back down
through the other lead wire back to the
energy source.
Gauge of wire refers to its
size.
The bigger the number the
smaller its size
The smaller the number the
bigger its size