Charging By Induction

Concept: Charging By Induction

5m
Video Transcript

Hey guys. In this video we're going to be talking about the process of charging objects through induction, okay? So, let's get right to it induction is the process of charging an object without touching, okay? This is different than conduction which requires touching of two objects together in order to transfer charges between the two objects for induction, we don't need the two objects to physically contact each other to charge one of them, okay? Now, induction is just a series of steps but the particular order of the steps is extremely important. So, pay close attention to the order, okay? Now, the first step in charging through induction is to connect our conductor, right? Let's say a metal ball to a ground. Now, what a ground is, it's a source and a sink of charges, what a source is, is just something that can give charges, what a sink is, is it something that can accept charges. So, what a ground is, is it something that easily can donate or can accept charges, the reason why it's called ground is because the physical ground, the ground that we're standing on connected to the earth is really good ground, the physical object, that's because the earth has so many charges that, if it gives a couple here, a couple there, accepts a few, it doesn't really change anything about the ground because that few charges that it's giving or accepting is tiny compared to the entirety of the earth, okay? So, it is a good ground, okay?

Now, step two is to bring a charged rod near our conductor, our metal ball, what this does is this pulls charges from the ground. So, we will have negative charges in this case that are attracted to the positive charge is in the rod and they jump from the ground into our conductor, from the ground into our conductor, okay? So, let's say hypothetically, that's three charges go into our conductor. Remember, that the amount of charge depends upon how close we bring our charged rod, how long we have it near etcetera, a bunch of things, let's just say hypothetically three of them get stuck there, okay?

The next step is to cut the connection between the ground and the conductor, okay? So, we are cutting this right here, but we are leaving our metal rod near the conductor, okay? So, we still have those three charges on our conductor and we are simply cutting the connection between the conductor and the ground, what this does is this prevents any escape of charges back down into the ground, those charges are now stuck on our conductor because there is escape room which was the ground has been severed, okay? Now, the fourth step is to remove our rod. So, we just take our rod and we send it bye-bye, okay? Those three charges now, they want to move away from each other, if we still had the ground they would want to run back down the ground but that ground is severed, that connection is gone, the escape is no longer an option. So, those charges have nothing to do but be stuck on the conductor and our conductor is now charged, okay? So, this is a process that ends in a charged conductor, conductor, sorry, without any contact between the conductor and the charged rod, okay? So, this is a process of charging by induction, thanks for watching.