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questions :Electric field
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[Visitor (122.194.*.*)]answers [Chinese ]Time :2019-04-05
The electric field is a special substance that exists in the space around the charge and the changing magnetic field. Electric field This kind of material is different from the usual object. It is not composed of molecular atoms, but it exists objectively. The electric field has objective properties such as force and energy of ordinary materials. The nature of the force of the electric field is expressed as: the electric field has a force on the charge placed therein, and this force is called the electric field force. The energy properties of an electric field are expressed as: When a charge moves in an electric field, the electric field force works on the charge (which means that the electric field has energy).
The electric field generated by the static charge in its surrounding space is called the electrostatic field; the electric field excited by the magnetic field in time is called the rotating electric field (also called the induced electric field or the vortex electric field). The electrostatic field is an active spin-free field, and the electric charge is a field source; the rotating electric field is a passive rotating field. The universal electric field is the sum of the electrostatic field and the rotating electric field. The nature of the force of the electric field is described by the electric field strength. The electric field strength is a vector, and the direction of the electric field strength at a point in the electric field is the same as the direction in which the positive electric charge is subjected to the electrostatic force at that point, and the direction in which the negative electric charge is subjected to the electrostatic force at that point.
An electric field is a physical field that exists around a charge to transfer the interaction between charge and charge. There is always an electric field around the charge; at the same time the electric field acts on other charge generating forces in the field. The field observed by the observer relative to the charge at rest is called the electrostatic field. If the charge moves relative to the observer, a magnetic field appears in addition to the electrostatic field. In addition to the charge that can cause an electric field, a changing magnetic field can also cause an electric field, the former being an electrostatic field and the latter being called a vortex electric field or an induced electric field. The changing magnetic field causes an electric field, so the interaction between the moving charge or current is transmitted through the electromagnetic field.
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