Hello again.
Today we will talk about the components of electricity.
We will talk about voltage current resistance types of currents AC and DC and different type circuits
close or been uncharged.
Let's start by talking about voltage current and resistance as you can see in this image we can use
water to visualize how electricity works.
As you can see here water flowing through our house is a good way to look at electricity.
Water is like electrons in our wire flowing electrons is called current.
So this water that comes out of this pipe is you must imagine it as electronic or electrons Brasher
is the force pushing water through a house.
Voltage is the force bushing electrons for the wire.
So we have electrons for water voltage for brush up or water Russia friction against the whole walls
slows the flow of water.
So resistance is the force that slows the flow of electrons.
So when the resistance increase it will decrease the whole amount of water coming out of the pipe
if we increase the pressure forcing the water through the House by opening up the spigot.
The water flows faster and squares further.
The opposite happens when we reduce the brush of the water flows slowly out down to a trickle in electricity
a force pushing electrons through the wire current is voltage.
If the voltage is increased more current flow.
If the voltage is decreased less current flow.
Now imagine keeping the pressure constant under your eyes.
What happens when we change the amount of water available to flow through the hose.
If there is lots of water the water will flow out at full force.
If there is limited water no matter how hard you Bush the water will only flow out at small trickle
in electricity if there is ample current available it will flow through the wire at full capacity.
If you limit somehow the amount of current then the current will only flow at a reduced rate.
Finally imagine what happened if you kept the pressure and the amount of water available constant but
restricted the diameter of the hose like putting your finger over the end.
The restriction prevents the all water from coming out but the water that does come out comes out with
greater force it will squirt further.
Also the water behind that is the restriction actually slows way down to where it is then to go out
of the restricted hole.
That same thing would happen if the interior wall of the house was made very very rough.
The water molecules would run into the rough surface and slowed down.
There is very much like friction in electricity the current does not flow through our wire without running
into something along the way.
This is always some or there is always some friction but electricity that friction is called the resistance.
One of the Stones goes up the amount of current flow goes down or resistance goes down.
The amount of current flow goes up.
Now you can examine that yourself with water by and test different concepts but this is uh I think that
we should mention at the beginning of our course so that you know what our electrons what the voltage
what is resistance and we try to make a real life example using water
now let's look at this image here.
To summarize what we have learned as you can see in a we have low brush out so small amount of water.
Low brush up and small amount of water is coming in a while and b there is high brush a large amount
of water as you can see the water will go further since the brush out here is high.
While in case for large diameter pipe as you can see at this diameter is much larger than this then
large amount of water will come out.
Uh we here the brush out is kind of stunned.
But the amount of water that came out of here is our much more.
This means that this pipe has low resistance and electricity terms.
And this one has these two has higher resistance since they have a small diameter.
This one have uh high resistance.
This is the by example for voltage current and resistance.
I hope that you have got the idea if you have any questions please ask in the Q and A dashboard.
Thanks for watching.