MYSTERIES#07
MAGNETIC FIELD
A magnetic field is a force field that is formed by moving electric charges(electric currents) and magnetic dipoles, and exerts a prize open on other in the neighborhood tender charges and compelling dipoles. At any particular point, it has a direction and a magnitude (or strength), consequently it is represented by a vector field. The stretch is second-hand for two dissimilar but tightly interconnected fields denoted by the symbols Band H, where, in the International System of Units, H is leisurely in units of amperes per meter and B is leisurely in teslas or newtons per indicator for each ampere. In a vacuum, B and Hare the matching departure from units; but in a textile with a magnetization (denoted by the symbol M), B is solenoidal(having no divergence in its spatial dependence) while H is irrotational(curl-free).
Magnetic fields tin be fashioned by moving electric charges and the intrinsic magnetic moments of elementary particles associated with a fundamental quantum property, their spin.[1][2]Magnetic fields and electric fields are interrelated, and are mutually machinery of the electromagnetic force, one of the four fundamental forces of nature.
In everyday life, Magnetic fields are generally habitually encountered as a forcecreated by permanent magnets, which twitch on ferromagnetic materials such as iron, cobalt, or nickel, and exert a pull on or hold off other magnets.
Magnetic fields are extensively old throughout
advanced technology, acutely in electrical engineering and electromechanics. The ground produces its particular compelling field, which shields the Earth's ozone layer from the solar windand is focal in navigation using a compass. Rotating captivating fields are second-hand in both electric motors and generators. compelling air force collapse in a row about the incriminate carriers in a substance through the Hall effect. The interaction of charismatic fields in emotional procedure such as transformers is considered in the restraint of magnetic circuits.
Example:-
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