Electric Field vs. Magnetic Field
The area around a magnet within which magnetic force is exerted, is
called a magnetic field. It is produced by moving electric charges. The
presence and strength of a magnetic field is denoted by “magnetic
flux lines”. The direction of the magnetic field is also indicated by
these lines. The closer the lines, the stronger the magnetic field and
vice versa. When iron particles are placed over a magnet, the flux lines
can be clearly seen. Magnetic fields also generate power in particles
which come in contact with it. Electric fields are generated
around particles that bear electric charge. Positive charges are drawn
towards it, while negative charges are repelled.
A moving charge always has both a magnetic and an electric field,
and that’s precisely the reason why they are associated with each
other. They are two different fields with nearly the same
characteristics. Therefore, they are inter-related in a field called the
electromagnetic field. In this field, the electric field and the
magnetic field move at right angles to each other. However, they are not
dependant on each other. They may also exist independently. Without the
electric field, the magnetic field exists in permanent magnets and
electric fields exist in the form of static electricity, in absence of
the magnetic field.
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