Transcript Document

Building
Brightness
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
http://phet.colorado.edu/simulations/sims.php?sim=Circ
uit_Construction_Kit_DC_Only
What are
these?
• Connect
with
lines
• Write
Names
What are
these?
• Connect
with
lines
• Write
Names
(1)
Light a bulb
• Build a circuit to light
one bulb.
• Add a switch & the
bulb to light again
Note to “break” a
junction press ctrl +
click on the junction,
then click on the
words “split junction”
• Draw the schematic
diagram
How do we fix it?
(2)
Build the circuit shown above
Then fix it so the bulb lights when the
switch is closed
Now Draw the schematic of the fixed circuit
(3)
Build both a series and then a
parallel circuit with two bulbs
• Draw schematics for each
• “Break” (split junction) a
bulb in each … what
happens to the other light?
• If a bulb breaks in a
building, what happens
with the other lights? What
kind of circuit can be found
in real buildings? How do
we know?
(4)
Is it Series or Parallel?
•
Which circuit is series and
which is parallel? (write S or
P on the diagrams)
•
How can you tell?
•
Without constructing the
circuits, what do you think
would happen if you “broke”
[control + click to Split
Junction] a bulb in each
circuit?
•
The circuits are drawn in a
way that might cause
confusion. How might they
be confusing and how could
we avoid being confused?
Do at least ONE of the following.
(Label your schematic A B or C)
(5)
• [A] Make a working series circuit with more
than two bulbs and draw it schematically.
• [B] Make a working parallel circuit with more
than two bulbs and draw it schematically.
• [C] Make a working circuit that is a
combination of parallel and series circuits
using more than two bulbs and then draw it
schematically. Which parts if the circuit are
series? Parallel? [Circle & label on schematic]
(6)
Ctrl + Click Battery
to Change Strength
No
Light
Make a circuit
where 5 blubs
light.(note you
can increase
the strength of
the battery)
Draw your
circuit.
YES
(7) Design a circuit
so all five light
AND where if
one bulb is
broken (break
link) at least
one other bulb
stays lit.
• DRAW
• Does it matter
which bulb (link)
you break (try
others)?
(8) Make a circuit
so any break
always keeps
the all the rest
on.
QuickTime™ and a
TIFF (Uncompressed) decompressor
are needed to see this picture.
How can we tell which is
series and which is parallel?
• List some ideas: