It is simply just theĮlectrical potential energy.
There's no direction of this energy, so there will never be anyĬomponents of this energy. But that's not the case withĮlectrical potential energy. Of that vector points right and how much points up. And potentially you've gotĬomponent problems here, you got to figure out how much When things are vectors, you have to break them into pieces. It's just a number withĮnergy is in that system. Something else that's important to know is that this electrical Joules if you're using SI units, this will also have units of joules. So since this is anĮlectrical potential energy and all energy has units of Would be no potential energy, so think of this potentialĮnergy as the potential energy that exists in this charge system. So you need two of these charges to have potential energy at all. I used to wonder, is this theĮlectrical potential energy of that charge, Q1? Or is it the electrical potentialĮnergy of this charge, Q2? Well, the best way to think about this is that this is theĮlectrical potential energy of the system of charges. That's the formula to find the electrical potentialĮnergy between two charges. Basically, to find thisįormula in this derivation, you do an integral. For electrical fields, the r is squared, but for potential energy, So in a lot of these formulas, for instance Coulomb's law,
That distance would be r,Īnd we don't square it. It would be from the center of one charge to the center of the other. So this is the center to center distance. K, the electric constant, multiplied by one of the charges, and then multiplied by the other charge, and then we divide by the distance between those two charges.
So to find the electrical potential energy between two charges, we take
#POTENTIAL ENERGY ENTANGLER HOW TO#
Gonna quote the result, show you how to use it, give you a tour so to So I'm not gonna do the calculusĭerivation in this video. There's a really nice formula that will let you figure this out. Potential energy there is in that system? Well, the good news is, there is. What's the formula to find theĮlectrical potential energy between these charges? So if you've got two or more charges sitting next to each other, Is there a nice formula to figure out how much electrical Mass of one of the charges times the speed of one We can find the kineticĮnergy of these charges by taking one half the Well, we know the formulaįor the kinetic energy of these charges. We'll put a little subscript e so that we know we're talking about electrical potential energy and not gravitational Like PE would've made sense, too, because that's the first two letters of the words potential energy. So why u for potential energy? I don't know. Physicists typically choose to represent potential energies is a u. It's coming from theĮlectrical potential energy. But the total energy in this system, this two-charge system, Potential energy decreases, the kinetic energy increases. So originally in this system, there was electrical potential energy, and then there was lessĮlectrical potential energy, but more kinetic energy. We would say thatĮlectrical potential energy is turning into kinetic energy. So where is this energy coming from? What is the source of this kinetic energy? Well, the source is theĮlectrical potential energy. Gaining kinetic energy, where is that energy coming from? I mean, if you believe inĬonservation of energy, this energy had to come from somewhere. The Q2's gonna get pushed to the right, and the Q1's gonna get pushed to the left. They're gonna fly apart because they repel each other. Sitting next to each other, and you let go of them,
We'll call this one Q1Īnd I'll call this one Q2. If you had two charges, and we'll keep these straightīy giving them a name.
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