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ELECTRICTY 2 NOTES
Resistance /
(Series and Parallel Circuits)
ROADMAP of SUCCESS for the
WEEK
MONDAY = Resistance and how to calculate in
Series and parallel circuits
Tuesday = Review for SIX WEEKS TEST
WED = SIX WEEKS Test
Thursday = Electrical Power / Electrical energy
calculations
Friday = Lab (Series / parallel) circuits –
(open/closed circuits)
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
--Open Circuit / Closed
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
--Open Circuit / Closed
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
--Open Circuit / Closed
--Current =
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
--Open Circuit / Closed
--Current = Flow of electrons
ON Friday….
On Friday we when we talked briefly about the
intro to the unit…….some of the vocab that we
would cover
--Open Circuit / Closed
--Current = Flow of electrons
TODAY….we are going to learn about
RESISTANCE and how to calculate it in Circuits
(Series /Parallel)…and tie current to it
ESSENTIAL QUESTION
SO our Essential QUESTION =What is Resistance
and how can it be calculated in series and
parallel circuits?
TEKS: Students is expected to evaluate the
transfer of electrical energy in series and
parallel circuits.
WHOLE BRAIN
Though we are taking a few
Notes…..we are still doing the usual
WHOLE Brain mini-lecture…..
Series Circuits
• Series circuits are the type of circuits that
most HOLIDAY tree lights have. If one bulb
goes out, all the bulbs go out.
Series Circuits
• Series circuits are the type of circuits
that most HOLIDAY tree lights have. If
one bulb goes out, all the bulbs go out.
Series Circuits
• Series circuits are the type of circuits
that most HOLIDAY tree lights have. If
one bulb goes out, all the bulbs go out.
WHOLE BRAIN
---CLASS
--In a second you are going to turn to your
partner and tell them
--What a series circuit looks like
--How many paths a series circuit has
--What variable is the same in series
circuits
--Talk about the effects of broken lights
Parallel Circuits
• Hmm………I see some parallel lines
Parallel Circuits
• If one bulb goes out…..(your tv goes out), all
the other things……refrigerator, lights, and
radio can still work.
Parallel Circuits
• If one bulb goes out…..(your tv goes
out), all the other things……refrigerator,
lights, and radio can still work.
Parallel Circuits
• If one bulb goes out…..(your tv goes
out), all the other things……refrigerator,
lights, and radio can still work.
Parallel Circuits
• If one bulb goes out…..(your tv goes
out), all the other things……refrigerator,
lights, and radio can still work.
WHOLE BRAIN
---CLASS
--In a second you are going to turn to your
partner and tell them
--Parallel circuits look like
--What variable remains the same in
parallel circuits
--Talk about the effects of broken lights
(if there is any effect)
RESISTANCE (real world example)
Think of resistance more as turbulence in a river,
as water goes over the stones its motion is
scrambled in many different directions and its
flow is restricted.
Resistance (another example)
Think of a circuit as a shopping mall! Resistors
are places where the electrons (people) can
spend their voltage (money!) on things.
Resistors are basically the same as light bulbs,
except they don't use the energy for anything,
they just waste it. Resistors don't slow down
current or anything like that, they just are a
place that voltage is turned into energy,
except the energy is wasted and not used for
anything.
Resistance
Resistance
Resistance
WHOLE BRAIN
--Class
--In a second I want you to turn to your partner
and discuss
--What resistance does in a circuit
--What was on the REAL world examples of
what resistance was like
-- Unit and the Symbol
RESISTANCE in Series Circuits
RESISTANCE in Series Circuits
RESISTANCE in Series Circuits
RESISTANCE in SERIES Circuit
RESISTANCE in SERIES Circuit
RESISTANCE in SERIES Circuit
RESISTANCE in SERIES Circuit
WHOLE BRAIN
--CLASS
--In a second I want you to turn to your
partner and discuss
--What the formula for Total
Resistance is in a series circuit
--What math operation would
we be using..(and another word for it)
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
RESISTANCE in parallel circuits
WHOLE BRAIN
--CLASS
--In a second I want you to turn to your
partner and discuss
--What the formula for Total
Resistance is in a parallel circuit
--What math operation would
we be using?
COOPERATIVE ACTIVITY TIME
Ya’ll did such a good job!!!! Way to go!!!!!
But we need to practice a bit more in-depth
with partners
-- Activity 1 (Series / Parallel circuits)
--Activity 2 (Resistance calculation for Series
/Parallel Circuit)
Practice = higher test scores…….
DEBRIEF / EXIT TICKET
Friday we learned about current / open and
closed circuits/ and today we learned about
Resistance and SERIES / PARALLEL Circuits.
BIG PICTURE = You need to know about
resistance since it limits voltage which affects
current (things work/don’t work)
You know need to write out (your answer to the
ESSESTIAL QUESTION (on AVID notes)
(What is Resistance and how do you calculate
it in series and parallel circuits)