Electric Circuits - Series and Parallel Video Lecture - Physical Sciences

hello what's going on young scientists
hi I'm trying to make an electric
circuit electric circuits Wow have you
learnt that in school a little bit I
have learned that the simplest complete
circuit is a piece of wire from one end
of a battery to the other yes an
electric current can flow in the wire
from one end of the battery to the other
but nothing useful happens the wire just
gets hot and the battery goes flat you
are right to do something useful with
electric current we need to put an
electrical component into the socket
such as a bulb that can use the current
to make something happen
very good you already know quite a lot
now let's learn some more when electric
charges move in a wire we say that an
electric current flows in the wire it's
like the way a current of water flows in
a river yeah it is like constant flow of
electrons through something when a wire
is connected to each end of the battery
electrons begin to flow from negative to
positive yes from minus to plus and this
fill of electrons is called current
now look at this hey there is no battery
in this yeah if there is no battery no
electricity will flow so the first
condition for the flow of electricity in
a circuit is that there should be
something to make the electrons flow now
look at this second circuit what is
missing
oh the socket is not complete correct
this is an incomplete circuit you need a
complete path for the current to flow in
this is called an electric circuit so
you need some power source like a cell
or a battery and you need full socket
for electric charge to flow yeah here it
is look at my socket it has a battery
and two bulbs and it is complete with
vials yeah it is very good this kind of
circuit is known as simple or series
circuits oh so if this is a simple
circuit is this something called complex
circuit ah there are two kinds of
circuits series and parallel so mine is
a series circuit can you tell me about
badges and sake hold on my scientist
brother let's first learn how to draw a
circuit on a paper oh it's so simple you
need to make a picture of a battery and
the world
yes it is very simple but in science
there are symbols for everything like
for bug you draw a symbol like this oh
then you need to talk to as my circuit
has two words and then the symbol for a
spell is not this oh just two lines now
we need to draw lines to make a self if
we draw straight lines which take turn
at right angles now my circuit is
complete it looks so beautiful like I
told you this is known as theory
circuits can you remove the wire from
one side of the first bulb both bulbs
have gone up what happened
everything was in the series when one
part of the series was removed this
circuit becomes incomplete and therefore
the current stops flowing that is why
both births stopped working this is a
problem with series circuits suppose if
one part gets fused all bulbs will go
off
is there no use for this kind of circuit
we use this type of circuits in
Christmas or the valley lights one small
bulb after another but if I of the bulbs
goes off all lights will go off and yes
there is another disadvantage also if
you will keep increasing the number of
bulbs in this circuit the light of each
of the bug will get dimmer and the poor
are then he benefit from this kind of
circuit there are two benefits one it
uses less amount of wires and the second
advantage is that if you want a warning
that one of the components in the
circuit has failed then the spiri
circuit is
now I understand all about the simple
circuit can you make a paddle and socket
oh yes let's make a parallel circuit for
you like I told you before it requires
more wires than simple circuits Wow both
verbs are one can you remove one wire
from the first look only one bulb has
gone off the second valve is still on
okay
now you have understood parallel
circuits can you draw it on the chart
oh yes
your it is is it okay perfect
let's clap for your work now can you
tell me one benefit of parallel circuits
battlin sockets are useful if you want
everything to work even if one component
has failed this is why our homes are
wired with parallel circuits so even if
one thing goes off at least other things
will continue to walk you are a genius
scientist I can tell the difference
between series and parallel socket you
know where is a pal way can you please
pass me the remote
look there are two types of hive Asia
one is a signal line highway and another
is a parallel lane highway signal lane
highway is like a series circuit one car
stops and the whole traffic stops very
good example and buzzy main highway is
like a parallel circuit even if a car
breaks out the rest so the cars can keep
going very very good way to compare both
the circuits see I am a genius you can
also become a genius
you should watch make nigiri song every
day