difference between electric field and magnetic field pdf

Difference Between Electric Field And Magnetic Field Pdf

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The relationship between electric potential and field is similar to that between gravitational potential and field in that the potential is a property of the field describing the action of the field upon an object see.

What, apart from their origin, is the difference between a magnetic field and an electric one? Electric and magnetic fields are both components of an electromagnetic field.

The one of the major difference between the magnetic and electric field is that the electric field induces around the static charge particle which is either negative or positive, whereas the magnetic field produces around the poles i. Some other differences between them are explained below in the form of comparison chart. The region around the magnetic where poles exhibits a force of attraction or repulsion. It is perpendicular to the electric field.

What's the difference between an electric and a magnetic field?

This paper introduces the reader to electric and magnetic fields, particularly those fields produced by electric power systems and other sources using frequencies in the power-frequency range. Electric fields are produced by electric charges; a magnetic field also is produced if these charges are in motion. Electric fields exert forces on other charges; if in motion, these charges will experience magnetic forces. Power-frequency electric and magnetic fields induce electric currents in conducting bodies such as living organisms. The current density vector is used to describe the distribution of current within a body. The surface of the human body is an excellent shield for power-frequency electric fields, but power-frequency magnetic fields penetrate without significant attenuation; the electric fields induced inside the body by either exposure are comparable in magnitude.

An electromagnetic field also EM field is a classical i. The electromagnetic field propagates at the speed of light in fact, this field can be identified as light and interacts with charges and currents. Its quantum counterpart is one of the four fundamental forces of nature the others are gravitation , weak interaction and strong interaction. The field can be viewed as the combination of an electric field and a magnetic field. The electric field is produced by stationary charges, and the magnetic field by moving charges currents ; these two are often described as the sources of the field.

Difference Between Electric and Magnetic fields

Electric vs Magnetic fields The area that surrounds an electrically charged particle has a property, that is referred to as an electric field. This exerts a force on other charge,s or electrically charged objects. It was Faraday who introduced this concept. An electric field is expressed in Newtons per Coulomb when in SI units. It is also equivalent to volts per meter. An electric field is considered as a vector quantity. The strength of such field is related to electrical pressure called voltage, and the force is carried through space from one charge to another charge.

The term static refers to a situation where the fields do not vary with time. Static electric and magnetic fields are two distinct phenomena, both characterized by steady direction, flow rate and strength thus a frequency of 0 Hz. In contrast, time-varying electromagnetic fields , which reverse their direction at a regular frequency , are produced by appliances using alternating current AC as well as by cellular telephone antennas, microwaves, etc. In this case, the electric and magnetic fields are interrelated and are both associated with a specific frequency. Both electric and magnetic fields weaken with distance from the source.

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The area around a magnet within which magnetic force is exerted, is called a magnetic field. It is produced by moving electric charges. The direction of the magnetic field is also indicated by these lines. The closer the lines, the stronger the magnetic field and vice versa.

Einstein is said to have been fascinated by a compass as a child, perhaps musing on how the needle felt a force without direct physical contact. His ability to think deeply and clearly about action at a distance, particularly for gravitational, electric, and magnetic forces, later enabled him to create his revolutionary theory of relativity. Since magnetic forces act at a distance, we define a magnetic field to represent magnetic forces. The pictorial representation of magnetic field lines is very useful in visualizing the strength and direction of the magnetic field.

 Останься со мной, - увещевал ее голос.

Electromagnetic field

Теперь его снова одолевали те же подозрения. Нуматака решил, что ему необходима дополнительная информация. Выскочив из кабинета, он повернул налево по главному коридору здания Нуматек. Сотрудники почтительно кланялись, когда он проходил мимо. Нуматака хорошо понимал, что эти поклоны вовсе не свидетельствует об их любви к нему, они - всего лишь знак вежливости, которую японские служащие проявляют по отношению даже к самым ненавистным начальникам. Нуматака проследовал прямо на коммутатор компании. Все звонки принимались единственным оператором на двенадцатиканальный терминал Коренсо-2000.

 Успокойся, Сьюзан, - сказал Стратмор, положив руку ей на плечо. Это умиротворяющее прикосновение вывело Сьюзан из оцепенения. Внезапно она вспомнила, зачем искала Стратмора, и повернулась к. - Коммандер.

Magnetic field is an exerted area around the magnetic force. It is obtained by moving electric charges. While the electric fields are generated around the particles.

 Ничего не вижу, - пожаловалась.  - Включи свет. - Прочитаешь за дверью.

Она оказалась в тоннеле, очень узком, с низким потолком. Перед ней, исчезая где-то в темноте, убегали вдаль две желтые линии. Подземная шоссейная дорога… Сьюзан медленно шла по этому туннелю, то и дело хватаясь за стены, чтобы сохранить равновесие.

Introduction to power-frequency electric and magnetic fields.

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