00:01
We have to find out electric field due to a dipole at a distance z from its midpoint on equatorial line.
00:10
Let us see the figure first.
00:13
Here, the dipole has charged minus cube and plus cube separated by a distance d.
00:20
O be the center.
00:23
So, we have to find out electric field at a distance z.
00:28
So this is our point p at point p.
00:34
So you can write electric field at p would be our.
00:40
You can see that the vertical component of the field can source out where the horizontal component remains.
00:48
So it would be only 2e cos theta.
00:56
So our electric field e is given by 1 by 4xelon qy.
01:03
Here the distance from charge minus qh are.
01:07
So you can write it here r square that is 1 by 4 by epsilon q divided by r is ever...