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Hello everyone! We are going to continue learning about electricity and inventions.

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In this video, we will cover electric currents, materials, and electricity and magnetism. Let's

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begin. An electric current is the flow of electrons between atoms. Electric

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currents are the movement of an electric charge. Electric currents need energy.

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Energy comes from a power source.

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The power source can be a battery or an electrical generator.

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Materials.

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Some types of matter have electrons that move easily from one atom to another.

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They are called electrical conductors.

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Metals are electrical conductors. For this reason, wires are made of metal.

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Wires need to allow electrons to move easily between atoms.

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Metals are electrical conductors, so they are able to do this.

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Materials can be conductors or insulators.

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Conductors allow electric current to pass through them.

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Metals like iron, silver, aluminum, and copper are conductors.

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Insulators do not allow electric current to pass through them. Wood, rubber, and plastic

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are insulators. Electricity and magnetism. When electric current flows through wires,

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a magnetic field is produced. This happens because negatively charged electrons are

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moving through the wire. Negatively charged electrons are moving through the wire.

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On the photo on the right, you can see a wire. The magnetic field is stronger

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if we put the wire into a coil around an object made of iron. This forms an electromagnet.

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In the photo on the right, you can see a simple electromagnet. The wire is coiled

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around an iron nail. Okay, that is all for now. Until next time, goodbye!