00:01
So the electric potential at a point, delta v, can be thought of as like the potential energy per unit charge up to a point.
00:09
So let's say we have some reference point p.
00:12
And we want to calculate the potential of p relative to some other reference points.
00:16
So let's say this is our reference point o.
00:19
All right.
00:20
Then this would be like the potential energy of a point charge with a value of q through a potential.
00:30
Difference between these two points.
00:34
And so if we think about what the potential energy represents, this is like the negative line integral of the force.
00:42
You know, this is the general expression for this.
00:45
It's like the integral over some path.
00:48
We'll call this, i don't know, lambda, i guess.
00:54
Some path lambda or the force dot product with the displacement.
00:59
So if we plug that in, our like voltage difference between.
01:01
Two points that are along this path lambda is just going to be negative f .dr over q...