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Electronics for Beginners Forum Semi conductors 1 Resistance | | | Author | Message | | asim
1 | this is good but if there is more information about current voltage that is better, so when i see that type of current defination i understand it and also i pick very fast. | Z-Vecho
6 | my error unfortunately we don't have an edit feature
I quote:
a resistor works simply by slowing down the amount of electrons that pass through the circuit at that point.
Correction>>
a resistor works simply by ((reducing)) the amount of electrons that pass through the circuit at that point. | Z-Vecho
6 | OK beginners lets look at resistance this is going to be very un-interesting for you, *Laugh My Arse Off* (LMAO)
lets look at resistance basically what is it.
it's the process of reducing the flow of electrons, now let me explain in a way most people can grasp.
Imagine electricity is a little like water
lets say we have a 1 inch pipe with water flowing inside from one end to the other the water flows smoothly.
Now lets cut a section of that pipe and put a reducer in to change the size of the pipe from 1 inch down to 1 quarter inch the reducer has just created a resistance.
a resistor works simply by slowing down the amount of electrons that pass through the circuit at that point.
it's really that simple
any material that carries an electrical current has a resistance, though most metals are known as conductors
it doesn't mean they don't have resistance.
Gold is one of the best conductors because it has the lowest resistance, copper silver and aluminium also have very low resistance.
Ceramics, Plastic, Wood and Air have high resistance
there for are known as insulators.
we measure resistance in Ohms
After George Ohm a German scientist who formulated the most basic electrical laws we now call Ohms Law
now I'm sure most people have heard of Ohms Law
if not this is how it works.
Watts = volts square divided by the Ohms
watts = Ampers square multiplied by the Ohms
Watts = Volts multiplied by the Amperes
amperes = volts divided by Ohms
amperes = Watts divided by Volts
amperes = square root of (watts divided by Ohms)
Ohms = volts divided by amperes
Ohms = volts square divided by the Watts
Ohms = Watts divided by amperes square
Volts = square root of (Watts multiplied by Ohms)
Volts = Watts divided by Amperes
Volts = Amperes multiplied by ohms
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