"Music"
Hey guys in today's topic we are going to
discuss about electricity
Now what is electricity? electricity is a physical phenomena
associated with the flow of electric charge. more specifically through the flow of electrons
through the conductors. electricity is a form of energy that comes in positive or negative form
Electricity is all around
us
powering technology like our cell phones,
computers, Fans
lights and so in our practical life we
may have experienced a force that when a
scale is rubbed on a fabric and takes
nearer to this small pieces of paper
those papers get attracted to the scale
now how does this happen.
To understand this we have to focus into the structure
of the atoms atoms has a positive Center
or nucleus electrons which are negatively charged rotates around the nucleus
generally the electrons of the
outer orbit or valence electrons are
loosely attached by the nucleus then
that of the electrons of the orbit
nearer to the nucleus hence it is easy
to discharge the outer electrons.
when external force is applied, such as
friction force. So when we say an object
is negatively charged then it contains
excess electrons and when we say an
object is positively charged we mean
it's missing for electrons
Now when we rub the scale on fabric the electrons
jumps to the fabric because of tendency
of attraction of the fabric is more so
scale loses its electron and it gets
positively charged thus when we bring it
to the smaller pieces of paper it
attracts the electrons of the paper
because of the light weight the papers
gets attached to the scale this causes
electrons who move from one place to another
when the electrons flow between
two points we call this Electricity
one of the most dramatic
state of electricity is a lightning strike
and electrically charged cloud
released their charge in an explosive flash
to use this electricity we need to
find a way to contain the flow of charged particles
that is what a battery
cell does. A battery is a chemical device
capable of stored chemical energy into
an electrical energy. Batteries have two
terminals or ends that is one is
negative and positive
this reflects negative and positive
charges on the electrons and protons
battery creates a force that move
electron out of the negative end and
attracts them on the metal part on
positive when electrons will start to
move from negative to positive end if
the right kind of material is connected
to the battery these materials are
called conductors copper is the most
common metals used in wires. A conductor is connected to each terminal of the battery.
Electrons start to move
traveling from negative terminal to positive terminal .
This is electricity.
One important thing we must remember
that we must never connect a short metal
wire between the terminals of a battery
this is a short circuit the wire will
get hot and we might burn ours
and hence the battery will lose its energy.  Now let us see a simple circuit the path that
electric current follows is called a
circuit this circuit has a light bulb we
need to move electricity through bulb we
connect the metal wire in each end of
the battery the wire does not get hot
because the light bulb reduces the
current flowing from the circuit
electric energy changes to light energy
once the circuit is complete
electric current appears flowing from
negative end to positive end of the
battery. Current tell us the rate at
which electrons are flowing through the
battery.
I hope you find this video very informative.
next time I will be back
with more videos regarding electricity
thank you have a nice day
you
