Electromagnetism

Electromagnetism 
Electromagnetism is the charge and the forces and the fields accompanied by charge. The two main aspects of electromagnetism is electricity and magnetism.
A long time ago, electricity and magnetism were once thought to be different forces but in 1905, Albert Einstein’s theory of relativity portrayed that both have aspects of one common phenomenon; though both electric and magnetic forces are described by different equations and they both behave differently. Electric forces are produced by electric charges in motion or at rest. The magnetic forces are produced by moving charges and they act only on charges in motion.
The responsibility of the electric force is the chemical and physical properties of atoms and molecules; it is even responsible for lightning and thunder! The electric force is very strong, it is stronger than gravity! This electric force can act in neutral matter because the forces act in individual components. The electric and magnetic forces can be found in the electric and magnetic fields. These electric fields can produce magnetic fields as well as magnetic fields can produce electric fields. The two fields travel together through space as waves of the electromagnetic radiation.
By the twentieth century, the electromagnetism understanding got greater. Albert Einstein’s theory of relativity brought together the electric and magnetic fields into one common field. By doing so, the velocity of all matter was kept to the velocity of  the electromagnetic radiation.  
Electricity is very important in electromagnetism. It determines the amount of charge in matter and the motion of charge from place to place. The different types of material are either conductors which is an electrical charge that usually carries electrons. It can move freely from atom to atom when applied with voltage. The second one is insulators which is a material that doesn’t allow electricity or heat to pass through it.  The electric current measures the flow of the charges in its matter.
Voltage is also important to electromagnetism. It is the measure of charge to flow from one place to another. When there are positive charges, the voltage will move from a high point to a lower point. For example, in a battery the electron (which is negative) will flow from the negative end to the positive end.

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