types of circuits · title: types of circuits author: bell, jody created date: 10/28/2016 3:11:48...
TRANSCRIPT
I can build and
compare circuits in
parallel and series.
LEARNING
GOAL
MINDS ON…Recall:
• Current electricity is the flow of electric
charge. This charge is carried by moving
____________________ in a wire.
• A circuit is an electrical device that provides
a __________ for current.
• A basic electrical circuit has 4 main parts:
• __________________________________
• __________________________________
• __________________________________
• __________________________________
electrons
path
Energy source - battery
Switch
Connecting wires
Load – light bulb
TYPES OF CIRCUITS
You should have a circuit building kit.
Make sure your activity is dated
Write the page numbers on your activity
Do not touch electrical equipment until asked to do so.
GET
READY…
Circuits can either be wired in series or in parallel.
TYPES OF CIRCUITS
Series
Parallel
https://www.youtube.com/watch?v=ian6NyXpszw
https://www.youtube.com/watch?v=0ar-__ub0rc
There is only one path for
current electricity to follow
SERIES CIRCUIT
Electrical loads
are arranged in a
chain
Build a simple circuit
with one battery and one
bulb.
Connect 2 bulbs to the
battery.
Connect 3 bulbs to the
battery.
PROPERTIES OF A SERIES
CIRCUIT
What happened to the
brightness of the bulb?
What happened to the
brightness of the bulb?
Unscrew the light
bulb, what happens?
Normal
brightness
Dimmer
Even
Dimmer
There is more than one path for
current electricity to follow
PARALLEL CIRCUIT
Electrical loads are
arranged like the
rungs of a ladder
Build a parallel circuit
with one battery and two
bulbs.
PROPERTIES OF A PARALLEL
CIRCUIT
How to build
the second
loop to make
it a PARALLEL
CIRCUIT…
Start by
building a
simple circuit
first…
Build a parallel circuit
with one battery and two
bulbs.
PROPERTIES OF A PARALLEL
CIRCUIT
Unscrew one of the light
bulbs, what happens?
Same
brightness
What do you notice about
the brightness of the bulbs?
The other
light bulb
stays on
Connect a third bulb in
parallel
PROPERTIES OF A PARALLEL
CIRCUIT
What happened to the
brightness of the
bulbs?
Stayed the same
for all bulbsBuilding a Parallel Circuit
LET’S SUMMARIZE
SERIES versus PARALLEL CircuitsDESCRIPTION SERIES PARALLEL
Arrangement
Pathway(s)
One load burns out
Adding bulbs One by
One (Brightness)
Electrical energy
shared/not shared
In a chainRungs of a
ladder
1 2 or more
Other bulbs
go out
Other bulbs
stay on
Other bulbs
get dimmer
Other bulbs are
same brightness
Shared Not shared
NOW YOU
TRY…
1. Complete check your learning worksheet #5.
2. If you don’t finish it is…
GROUP CHALLENGE!
Your group will get 5 circuit boards (10 bulbs) and as many wires as you need.
You must get your circuits checked before you plug them in!
Make a model to demonstrate Christmas lights connected in series. Prove it works by unscrewing one bulb and seeing what happens.
Next, make a model to demonstrate Christmas lights connected in parallel. Prove it works by unscrewing one bulb and seeing what happens.
CONSOLIDATION
CONSOLIDATION
Parallel
Series
What type of circuit has
loads arranged in a chain?
series
Parallel
Series
What type of circuit has one
path?
series
Parallel
Series
What type of circuit do the bulbs
stay the same brightness if
another bulb is added?
parallel
Parallel
Series
What type of circuit do other
bulbs go out if one bulb gets
unscrewed?
series
Parallel
Series
What type of circuit shares
electrical energy between
the loads?
series
Parallel
Series
What type of circuit has
more than one path?
parallel
Parallel
Series
What type of circuit are the
loads arranged like the rungs
of a ladder?
parallel
Parallel
Series
What type of circuit do other
bulbs stay lit if one bulb gets
unscrewed?
parallel
Parallel
Series
What type of circuits are
shown in the following
examples?
series
Parallel
Series
Home
lighting
parallel
What type of circuits are
shown in the following
examples?
Parallel
Series
Flashlight
series
What type of circuits are shown
in the following examples?
Parallel
Series
series
What type of circuits are shown
in the following examples?
Parallel
Series
Old style holiday lights
Series
What type of circuits are shown
in the following examples?
Parallel
Series
parallel
New LED Holiday lights
What type of circuits are shown
in the following examples?
Parallel
Series
Car headlights
parallel
What type of circuits are shown
in the following examples?
Parallel
Series
Security systems
series
What type of circuits are shown
in the following examples?
Parallel
Series