Hello again.
Now let's talk about type of column.
There are two types of current.
The time is in her mind but only by the direction the current flows through a conductor.
The first type is direct current or DC flaws in only one direction negative toward positive bowl of
Source The second type is alternate in current flows back and forth because the bonds of the source
alternate between positive and negative.
This means that if the current alternatives from flowing in one direction one minute and then reversing
to the other direction the next moment the current is alternative current.
Now let's look at this schematic as you can see the schematic shows AC current vocabulary.
This is the maximum positive value.
And this is the maximum negative value.
This line and this line uh this is the value to measure the voltage or current.
As you can see starting from zero it will go.
And that was the direction then it will go on the negative direction.
This means that this is a AC current on AC current.
Since it goes in both direction positive and negative.
If it's only in the positive direction then it will be ADC.
CONAN Let's look at some terms here.
The point from here a to b is called One cycle.
This is one cycle as you can see half of it in the negative direction and other having a positive direction.
We can also call the one from zero to this point cycle or one cycle.
This axis is the time axis and as you can see this is the distance traveled in one cycle which is called
wave length.
These are the basic concepts that you need to understand about AC and DC and current and voltage.
They are very much the same and DC it will be a constant value in one direction while AC it will be
a value that alternate between positive and negative direction.
Thanks for watching.
See your next lesson in which we will talk about circuits.