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In this teaching unit you will learn: To describe qualitatively the phenomena of electrification, electrostatic attraction and repulsion and to introduce the concepts of electric charge, insulators an ...
In this teaching unit you will learn: To understand the parallelism between an electric circuit and the distribution of water in a closed circuit. To learn the characteristic magnitudes which describe ...
In the past, human beings thought rays were signs sent by the gods. Therefore, they knew natural electricity, but they were unable to understand it. Thousands of years later, they became aware of the ...
La sección Classic papers de la web Classic Chemistry , del profesor estadounidense de Física Química Carmen Giunta, nos ofece un magnífico recopilatorio de artículos que describen hallazgos importan ...
Video Física
"Insulators, also called dielectrics, don't conduct charge. In insulators, there is no conduction band so charge does not move to any appreciable extent. Dialectric strength, also called breakdown v ...
"Electric charge is the transfer of electrons from one material to another. So negative charge means that there is an excess of electrons while positive charge is a deficiency of electrons. Quantiza ...
Video Física
"Electric potential is the ratio of electric potential energy and test charge. The concept of test charge is explained in electric fields. Positive charges prefer high electric potential while negat ...
Hipervinculo Física
"Opposite electric charges attract each other while like electric charges repel each other. This force of attraction and repulsion is called electric forces. Coulombs law states that force of attracti ...
Hipervinculo Física
"An electric field is the ratio between the force felt by a small charge and that small charge. The small charge is called the test charge. This force can be found using Coulomb's law. Electric field ...
Video Física
"Electric current is the rate of charge flow as charge moves through a conductor. Current is conventionally taken to be in the direction of positive charge flow. Current is caused by differences in ...
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