Wednesday, 19 December 2012

electric charge-QUANTIZED AND CONSERVED CHARGE


HEY GUYS:
I HAVE ONE SPECIAL WORD THAT MAYBE YOU HAVE ALWAYS USED IT WITHOUT EXACTLY KNOW THE MEANING OF IT..

Ever heard the word 
QUANTUM? QUANTIZED? QUANTISATION?
I bet you have .. but do you know the meaning?
Quantized means that you are referring a group of particles as one specific volume..
For example ; take a deep breath now. Do you know how many of oxygen you are breathing in?? what about carbon dioxide? And other particles such as dust?
So, we have to quantized and ASSUME the oxygen,CO2 and other have specific volumefor ONE single particles. Get it?
Straight to the point,when you heard that charge is quantized it means that they can have only discrete values rather any values. Using the discrete value, it is possible to calculate the particle that has no charge at all or +122e or -3e. However, it is completely unlogical if you are saying that you can find the value of 10.57 e!
it means electric charge cant have any value .
it must be a multiple of 1.6*10^19
as
q = n e
where e = charge on an electron
n = number of electron (1,2,3,4 ..........)
now you do understand right?
J barakallah
Then HOW ABOUT CONSERVATION OF CHARGE??
DOES THAT PHRASE EVEN EXIST AND POSSIBLE FOR CHARGE?
DOES CHARGE CAN BE CONSERVE? HOW?
The net charge of an isolated system remains constant. The only way to change the net charge of a system is to bring in charge from elsewhere, or remove charge from the system.
Charge can be created and destroyed, but only in positive-negative pairs.


Example

Two identical metal spheres are charged. Sphere A has a net charge of +7Q. Sphere B has a net charge of -3Q. The spheres are brought together, allowed to touch, and then separated. What is the net charge on each sphere now?
1.     Each sphere has a net charge of +4Q
2.     Each sphere has a net charge of +2Q
3.     Sphere A has +4Q, Sphere B has no net charge
4.     Sphere A has +7Q, Sphere B has -3Q
When the spheres are touched the net +4Q charge will spread out evenly over the two spheres. Each sphere will have a net charge of +2Q.
SIMPLE EXAMPLE.! J



electric charge-COULOMBS LAW


CoulOmbs law

When we are talking bout particles, they have positive and negative charges. Right?
Ever wondered why they are labeled as different type of charge? Or Sir JJ Thomson did it for fun?
Here’s a simple example, in Islam, we believed in Allah the Almighty, the One and Only God For the universe. Allah have stated in the Holy Quran about this worlds, we as human being are created men and women to interact with each other. And the basic need of human being is called LOVE. (Without LOVE there’s war everywhere) when it comes about LOVE, the TRUE and blessed LOVE is only with Men and Women. There’s no way Men with Men and Women with Women.
Back to the type of charges exist, if we labeled the positive and negative charge as men and women respectively, so we can see that for LIKE charges (positive with negative or labeled as Men with Men will FOREVER AND ALWAYS REPEL! Men will never Get attracted towards another men.)
How about the DIFFERENT charges? (negative with positive or labeled with men and women; for sure men can get attracted or fall in love with women right? And so does women)
Therefore, if they are really REPEL or ATTRACTED away or towards EACH OTHER, then by how much? Or easily said by labeling again, HOW DEEP YOU’VE FALLEN IN LOVE FOR OTHER MEN/WOMEN?
To recall back the basic characteristics of charges is THEY ARE INTRINSIC which you cant see with your naked eyes.right? so does LOVE it can’t be seen, but for charges AMAZINGLY WE CAN CALCULATE THEM!

The equation that relate how MUCH their strength of repelling and attracting towards each other.
Coulomb’s law describes the electrostatic force between small (point) electric charges q1 and q2 at rest (or i q1 and q2 nearly at rest) and separated by a distance r.



electric charge- CONDUCTORS AND ISULATOR


conductor and insulator

the behavior of object determine whether it is conductor or insulator, this characteristic is a very important on how we want to use this material in electric component. such as copper act as conductor, we use it in electrical wiring since the invention of the electromagnet and the telegraph in the 1820s ( wikipedia) . so it has been use a very long time ago. then we also use plastic as an insulator of the electrical wire. read more to know more. :)

conductor : 
materials that have excess charge freely flows. thus, it can conduct electricity. the excellent conductor is metal.
This conductor can transfer the electrical charge through free movement of electrons , so below shown the picture of a conductor. 



insulator : 
materials which excess charge does not move. It stay on one place. there are few if any free electrons in insulator  . Most non-metals are insulator. In short ,
because of insulator doesn't transfer in electrical charge it is often use in electrical experiment and demonstration. such as it is use for moving conductor in lab and also we using a lab coat, it also an insulator material. 

the example of plastic


and this is an example of demonstration on how conductor and insulator work. enjoy !! :) . this experiment will show you whether a material is conductor or insulator, it is a simple demonstration, such a conductor can transfer electrical charge so it will light up the lamp and insulator that doesn't allow the electrical charge will not lighten up the lamp. can you identify which is insulator or conductor? let's watch the video. 




Semi-conductors : 
like silicon used in computer chips, have electrical conductivity between that of conductors and insulators. The application of semi conductor is in electronic component such as LED (light emmision diode) , transistor , and many more. 


semi-conductor application in IC (integrated circuit) manufacturing

superconductor : materials that have excellent conductor. in other word it is a material that exhibits no resistance to the flow of an electric current. Once a flow of electrons is started in such a material, that flow continues forever and ever. subhanallah !



A small cube magnet hovering over a nitrogen-cooled specimen of a superconducting ceramic demonstrates the Meissner effect.  Because the test is so distinctive it is used as a test for identifying superconducting materials.

That's all on this post , thank you for reading !!! read more learn more. barakallah hu fika.


chapter 1 - intoduction electric charge


......

Assalamualaikum warahmatullah to all readers ! 

glad you were here today.
so on this post we will discuss one of the 

most important topic 

on the subject electric and magnetism that is electic charge .
why is it like that? haa , that's because it it on the first chapter. 

that's why laa. ok then what is the defination of  electric charge ?? 

it is define as 



'is an intrinsic characteristic of the fundamental particles making up those objects; that is, it is a property that comes automatically with those particles wherever they exist.'

such intrinsic means the characteristic are in whole of the particle and comes automatically means each object have its own charge automatically. 


  hey readers, look at this one ! 


if they are what if the charge is balance
we can say that charge is equal and do not repel nor attract each other. 
in other word it is electrically neutral.

all this is under the rule of "Coulumb's Law" of electrostatic force. (this will be explain further in our post of coulomb law)
electrostatic means the charge is in stationary or move very slowly
                                   -e =  +1.602 x 10-19                -e =  _1.602 x 10-19 
the unit above is in COULOMB