The charges and Static electricity

Many of you might have asked your mom when you were younger as to how the bulbs in your room light up , and she may have said " oh baby , it's because of the gravity of the earth " , or my mother used to tell me that because I was such a cute little nagger , and now that I'm older and learning [ eventually ] I finally knew how it did the magic , let me tell you a little hint . 

We all know that Atoms have charges [ right ? pretty basic though ], the so called "positive" and " negative charge " and of course , my personal favorite " no charge" [ my favorite because lesser lesson has been discussed for this charge ] 

You see, Charge is a physical property, all object on earth have charges , [ your sweater and other stuff ] It can either have a positive, negative or no charge [by the way "no charge " is still considered a kind of a charge ] Charged object exert a force , and this force you can usually see around the doors of a grocery store or somewhere where there's doors - the so called push or pull .
The Law of Electric Charges states that like or the same charges repel or push away while opposite of different charges attract or pull towards the other charge.
Now if you push or pull a door usually the strength can be measured right ? , well for charges who repel or attract there is also force exerted which is called Electric force , so to wrap up , Electric force is the force of attraction or repulsion on a charged particle that is due to the space around a charged object in which another charged object experiences the force , which we call the Electric field , so to wrap more things up , Electric force is the force exerted by the charged particle , and Electric field is the space around the charged object . 


Now how can an object become a charged particle ? 
Well darling , it can be charged by :


1) Friction - happens when electrons are being transferred from one object to the other through physical contact on the surfaces.
2) Conduction - happens when electrons move from one object to the other object by direct contact.
3) Induction - happens when chaqrges in an uncharged metal object are rearranged without direct contact with a charged object.


What device can detect a charge ?

You can use a device called Electroscope to see if something is charged. 
An electroscope is a glass flask that has a metal rod in its rubber stopper. Two metal leaves are attached to the bottom of the rod. When the electroscope is not charged, the leaves hang straight down. When the electroscope is charged [ the leaves grow. Joke ] , the leaves repel each other , or spread apart . 


What are conductors ? 
An electrical conductor is a material where charges can flow or move easily . 
Examples of which are Copper , Aluminum , and mercury . 

What are insulators ?
An electrical Insulator is a material where charges cannot flow or move easily. These usually protect you from electrical shocks.
Examples are Plastic , rubber, glass, wood, and air that you and I breathe are good insulators .

Now we've been mentioning a lot about electricity ,
Let's talk about Static electricity [ well that's not about your favorite band the Fm Static but I guess they also know about the concept of the static things that inspired them to name the band that way , but anyhow it's time you learn about it too ]


Static Electricity is the electric charge that is at rest . When we say "static" it means "not moving" 
Try to rub your shoe against the carpetted floor , and after sometime touch a metal, once you get electrecuted, that's Static Electricity at work. 

- End of topic -