00:01
And in this question, you look at laurence transformations for electric and magnetic fields, right, which are given by these expressions.
00:08
So you ask to apply these transformations to calculate the electric magnetic field of a point charge and moving with constant philosophy with respect to observer, right? so suppose the charge which is moving a constant velocity, for example, like this, let's say v, okay, i'm there's some speed, and you know.
00:25
So in the frame in which the charge is static, you have only the electric field, right? and this elect field, so basically what's happening is that if you look at, oh sorry, so if you look at a frame in which the charge is come moving, right? and in that frame, the charge appears only as a static electric field, right? in that frame, so in the static frame, i'll write you or something like this.
00:52
The later field, you know, goes like this, right? that's the negative field.
00:56
That's the electric field.
00:58
And this electric field will appear as is simply given by basically the charge, right, cube and divided by the distance r2.
01:07
That would be it.
01:09
So that's the magnitude.
01:11
If you want the direction, then it's given by r0.
01:16
Just multiply the wider direction, right? the rather unit factor...