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Static & current electricity

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Subido el 19 de mayo de 2020 por Luis Miguel I.

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Hello and welcome to another natural science video. Today the two types we have to learn 00:00:00
about electricity, static and current electricity. Here we go. Static electricity. Static electricity 00:00:07
gathers in one place, se acumula, stays in one place. Examples that you know, a balloon, 00:00:14
when you touch a metal, or when you comb your hair. I really hate when this happens, you know. 00:00:21
Okay. Static electricity. Look at the example that you have in your book. It's on page 70. Look, this is how it happens. Static electricity occurs when there is an imbalance, a disequilibrio, of positive and negative charges between two electrical scintillators. 00:00:27
Electrons, in this case from the boy you get in the picture, 00:00:46
rub off onto the floor, onto the carpet, and he is positively charged. 00:00:50
Opposite charges, remember they attract the electrons of a negatively charged object, 00:00:55
are attracted to a positively charged object. 00:01:01
When lots of electrons move at the same time you may see the spark 00:01:04
or you feel like a small shock, like when you touch the metal door in this case. 00:01:09
this case now another or the most important example of static electricity in nature 00:01:15
are lightnings look at the picture lining how they happen look rain clouds they move 00:01:22
very fast okay you are ready for a storm and water air and ice particles inside the 00:01:29
cloud they rub against each other and they create the static electrical charge finally 00:01:38
when the charge is big enough clouds release the energy and which we can see as as a light 00:01:44
the other term current electricity it flows it moves the electricity you have at home 00:01:52
okay electrons pass quickly from one atom to another within certain materials here it's 00:01:59
important that we distinguish this type of materials because we got conductors and insulators 00:02:07
look at them for example silver gold copper steel and sea water they are good conductors or 00:02:12
insulators they are very good conductors good electrical conductors like wires and other metal 00:02:19
objects allow electricity to travel through them easily okay be careful especially with water you 00:02:25
know this then rubber glass oil a diamond wood which when it's dry and since they're getting 00:02:31
water they are electrical insulators rubber plastic woods do not allow electricity to pass 00:02:38
through them finally look at this example the electrical circuits this is the electricity you 00:02:44
get at home an electrical circuit allows electrons to flow through a path we get the wires those 00:02:51
cables they conduct the electricity okay then the power source that provides the electrical energy 00:02:57
for example a battery, okay, una pila, or then you need the switch. The switch opens and closes the 00:03:02
circuits and you can stop the flow of electricity when you turn on or you turn off the lights at 00:03:09
home. And finally a resistor. The resistor, una resistencia, is the object that transforms the 00:03:15
electricity into another form of energy. For example the light bulb is a resistor and it 00:03:23
it transforms electricity into lights this is its static and current 00:03:28
electricity I hope you understand if not you know you can ask and see you 00:03:34
tomorrow all right goodbye 00:03:38
Subido por:
Luis Miguel I.
Licencia:
Reconocimiento - No comercial - Compartir igual
Visualizaciones:
32
Fecha:
19 de mayo de 2020 - 20:07
Visibilidad:
Público
Duración:
03′ 41″
Relación de aspecto:
1.78:1
Resolución:
1920x1080 píxeles
Tamaño:
103.09 MBytes

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