0:00
Hello.
00:02
In the question we have to explain why iron core changes the size of induced current.
00:07
Now induced current, it is how the current is induced.
00:11
So basically when there is a change in magnetic flux, it generates an emf and that emf will result in the change in the current.
00:19
So that is the induced current.
00:21
Now see.
00:24
Now when a soft iron core, so if a soft iron core is placed, is inserted.
00:36
In coil so what happens is the iron atoms which are there in the soft iron core they will line up to add magnetic field so soft iron core inserted in coil adds magnetic field why it's why it act adds the magnetic field because the atoms line in the direction of the magnetic field and the strength of hence increasing hence increasing strength of strength of the magnetic field.
01:23
I'm just writing b field like this.
01:26
So, so if the magnetic field strength is increased, so we know that induced dmf is equals to minus d5 by dt.
01:38
So what we can say is if the current is increased.
01:42
So we can use the lens law also.
01:45
We can use another law also.
01:48
So if, if we, if we, if we...