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we are going to describe some electric components the more important that we

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are going to use obviously and some of them such as resistors just only

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control the values of the current electrical current but they can also use

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as inputs in an electronic circuit if there are variable resistors or

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potentiometers because they can transform the position so a physical

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physical action into a current something that happens in the current

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Buzzers are also outputs, they emit sounds, lamps are also outputs, they can bright, and fuses are protection elements,

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And switches are to control the circuit and the way it works.

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The resistor. The resistor limits the flow of electrical current through the circuit by using the Ohm's law.

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But the value of the resistors can be different and we can know by using the color code.

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A resistor such as this usually has at least four rings, four bands.

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three has different color and the fourth one just only be a gold or silver

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so we can know the value of the resistor by using this code it is very easy to know

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The band 1 and 2 are just only digits and the value of this digit is known by its color.

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Black is 0, brown is 1, red is 2, orange 3, yellow 4, green 5, blue 6, violet 7, grey 8 and white 9.

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So, you can know the values, two digits. And the third one is an exponent of something. So, it's connected to the multiply of the value.

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and the value of this exponent is known by its color

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so for example if you have something brown, brown, brown

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is 11, but you should multiply by 10

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So it will be 110. And the fourth band is just only the tolerance. If it's gold, it's the 10% of the main value.

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Sorry, it is silver, it is the 10% of the value, and it is gold, it is the 5% of the value.

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As you can see in this example, for example, you can see here, you can see some example.

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The resistors can also have more than four bands, such as 5-oxys, and this is a little bit more complicated in this particular case.

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You can see some examples, 3-3, in this example, for example, 3-3 because it's orange, orange, orange, and it is multiplied by 2.

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so if they either could be no it is you can also have a variable resistance of

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potentiometers in this particular case the connection the resistance the

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resistance can be different because we can change the length of this resistance

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so by the connection it was it usually have three connections and what and the

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real connection in the circuit is one and two so you have the the output one

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and the output into and the resistance and can be calculated by this one the

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so it depends of its length research are other other electric components they

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emits a blue scene when the current flow and it has polarity so you should be

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careful when you connect them both are very useful because they are really

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important and in a bulb you have the you have a distant filament which which by

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Joule's effect heats a lot and it emits light when the heat is enough

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this is its symbol just only to protect something generally a component by Joule's

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effect the filament always heats so if the heat is enough the filament can melt and then the current

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flow the flow is stopped it is the same as a switch open for control it can be different types

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it just only have to position open and close one that can allow let the current flow flows can be

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one switch or just a push and the other the other types other types is when has

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two or more or more ways that it is usually used to different

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controls. Limit switches which is a device that works between different

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position by a lever or so on and I hope it can be useful