ELECTROSTATICS

ELECTROSTATICS. Factories And Smoke.

[Audio] Static electricity refers to charge that is not moving i.e., stationary charge. An insulator can be charged electrically, by rubbing it while a conductor cannot..

[Audio] There are two types of charge: (a). Positive charge + (b). Negative charge - The SI unit of charge is the Coulomb, denoted by C. Negative charge is acquired if electrons are gained, and positive charge is acquired if electrons are lost. All charges obey The Law of Electrostatic Charge, which states that, "like charges repel and unlike charges attract." Electric charges can exist independent of each other..

[Audio] Positively charged rod is brought near a neutral metal sphere, separating the charges. The sphere is then connected to the ground. Negative charges flow from the ground to neutralize positive charges. When the sphere is disconnected from the ground and the charged rod is removed simultaneously, the sphere is left with negative charge..

[Audio] Touching the sphere with a positively charged glass rod, allows for the passage of negative charges in to the rod, leaving the sphere positively charged. Electrons flow from the piece of cloth into the polythene rod. Electrons flow out of the acetate rod into the cloth which then becomes negatively charged..

[Audio] This is a demonstration on charging of the spheres by separation of charges..

[Audio] This is to demonstrate how to charge two spheres by separation of charges..

[Audio] Demonstration on charging earthing or grounding..

[Audio] Gold leaf electroscope used to detect charge..

[Audio] Charged and discharged Gold leaf electroscope..

[Audio] When excess charge has accumulated in the cloud it is discharged to the ground through ionization. A lightning conductor discharges a cloud before it discharges on its own. The lightning conductor should be made from a good conductor of electricity, and it should be taller than the structure it is protecting..

[Audio] The electric field is a region around a charged particle, where its electric force is felt. Electric fields are illustrated with the help of electric field lines which begin at the positive charge and end at the negative charge The diagrams demonstrate the field around single charges..

[Audio] Field around two like charges.. The point E= 0, is a neutral point..

[Audio] Field around two unlike charges.. Field between 2 unlike charges.