When electric charges move, that's called current! In most circuits, this movement is accomplished by electrons in a conductor. As it turns out, an electron doesn't need to move very far; it can force other electrons in the conductor to move. In the video, we demonstrate moving electric charges with a tube and some metal balls. We also examine conventional current vs. electron flow and how good ol' Ben Franklin can be blamed for that bit of confusion.
Electrical current. In this article we’re going to be discussing electrical current, we’ll be looking at what is current, the different types, how to check the ratings of your electrical devices as well as how we use safety features to save you from being electrocuted.
Current is the flow of electrons in a circuit. To use electricity, we need electrons to flow in the same direction around a circuit. We usually use copper cables to form the circuit because the atoms that make copper have a loosely bound electron in their outer most or valance shell which is free to move around inside the metal. This free electron is very easy to move which is why copper is so popular. It’s so easy to move that it will naturally just move to other copper atoms by its self but this occurs randomly in any and all directions which isn’t useful for us.
For us to make use of this we need lots of electrons to flow in the same direction along a circuit, we can then place things, such as lamps, in the way of these electrons so that they flow through it and generate light and heat etc.
When electric charges move, that's called current! In most circuits, this movement is accomplished by electrons in a conductor. As it turns out, an electron doesn't need to move very far; it can force other electrons in the conductor to move. In the video, we demonstrate moving electric charges with a tube and some metal balls. We also examine conventional current vs. electron flow and how good ol' Ben Franklin can be blamed for that bit of confusion.
Electrical current. In this article we’re going to be discussing electrical current, we’ll be looking at what is current, the different types, how to check the ratings of your electrical devices as well as how we use safety features to save you from being electrocuted.
Current is the flow of electrons in a circuit. To use electricity, we need electrons to flow in the same direction around a circuit. We usually use copper cables to form the circuit because the atoms that make copper have a loosely bound electron in their outer most or valance shell which is free to move around inside the metal. This free electron is very easy to move which is why copper is so popular. It’s so easy to move that it will naturally just move to other copper atoms by its self but this occurs randomly in any and all directions which isn’t useful for us.
For us to make use of this we need lots of electrons to flow in the same direction along a circuit, we can then place things, such as lamps, in the way of these electrons so that they flow through it and generate light and heat etc.
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