Physics Electricity and Magnetism

Physics Electricity and MagnetismWhenever you ring a doorbell, switch on a television or travel in a car, Electricity and Magnetism are involved.

Electricity is not just something you get in a battery. It is one of the fundamental ingredients of the world. Everything close to us is made from invisible atoms and the atoms contain particles that have electric charge. Charge can be negative or positive.

Magnetism is what provides magnets their capability to attract things made of steel or iron. A magnet generates around itself an area of space with unique properties. This region is referred to as a MAGNETIC FIELD. When two magnets come near each other, their fields generate forces that repel or attract.

Relationship between Electricity and Magnetism

The relationship between electricity and magnetism is referred to as electromagnetism. Electricity and magnetism were regarded as separate for some time. But they are connected and both powerful forces in nature.

Methods to Show the Relationship:

Every time an electrical charge moves, a magnetic field is produced and every time a magnetic field is diverse an electric field is developed. 

If you have a coil of wire close to a core of metal and move a current through the coil, a magnetic field is created. This is known as an electromagnet. Moving electrical charges produces magnetic fields.

In the same manner, if you move a wire circuit via a magnetic field, it will create an electric current. Different magnetic fields will produce an electric current.

Electric and Magnetic Fields

Electric and magnetic fields (EMFs) are hidden areas of energy, often known as radiation, that are related to the usage of electrical power and various types of natural and manmade lighting. EMFs are generally characterized by frequency or wavelength into 1 of 2 radioactive categories:

Ionizing: high-level radiation which has the potential for cellular and DNA damage

Non-ionizing: low-level radiation which is usually perceived as harmless to humans

Can EMFs be harmful to humans health?

Throughout the 1990s, many EMF research centered on extremely low frequency exposures stemming through conventional power sources, including electrical substations, power lines or home appliances. While a few of these studies demonstrated a possible link between EMF field strength and an improved risk for childhood leukemia, their findings indicated that such an association had been weak. 

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