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The current model is that a point charge, i.e., a basic charge loader, whether an electron or a proton, is treated as a geometrical point.
Thus its charge distribution is a δ function, i.e. there is no charge distribution outside the point, the charge at that point is infinite, but the charge-position integral is a constant e
If a charge is volumetric, then it will still behave in the same electrical properties as a point charge outside of its charge distribution cross-section; The premise is that the electric field force does not affect its charge distribution, that is, the charge on it does not change the position distribution relationship due to the change of the surrounding electric field, yes"Nailed"Target; Otherwise, at a relatively close distance, . .The electric field force will not conform to the existing laws of electromagnetism, just as the electric field attracts small and light objects; or a strongly charged object, which manifests itself against an object with a trace amount of the same charge"Attract"Force.
In addition, if the charge has volume, then its own charge distribution will also be affected by its own electric field force, and of course, by its own structural properties, and finally reach an equilibrium. However, from the outside, it is the internal force of the system, and it will still exhibit conservation of momentum and angular momentum without external forces. To some extent, it can be said"Overall performance is 0"
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The role of oneself on oneself can be understood as an internal force. It's like when you sit on a stool, lift your feet up, and pull the stool with your hands, but no matter how hard you try, the stool just can't be lifted. Because it takes an external force to change the state of motion of an object, according to your assumption, it is indeed affected by itself, but the overall effect is zero, and the asymmetry in time is also zero, as I just gave an example.
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It takes more than two objects to generate force, and the same is true for microscopic objects.
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The force exerted by the electric field on the charge is known as the electric field force.
The charge is the positively charged or negatively charged particles carried by the object or the particle that constitutes the object, and the positively charged particles are called positive charges (the symbol is "+" and the negatively charged particles are called negative charges (the symbol is " "It is also a property of some elementary particles (such as electrons), the same kind of charges repel each other, and different kinds of charges refer to the mutual attraction of the charges.
In electromagnetism, electric charge (diàn hè) is also a physical property of matter. A substance with an electric charge is called an "electrically charged substance". Two charged substances exert forces on each other and feel the forces exerted by each other, and the forces involved obey Coulomb's law.
There are two types of electric charges, "positive charge" and "negative charge". Substances with this charge are called "positively charged"; Substances that have a negative charge are called "negatively charged". If both substances are positively charged or negatively charged, the two substances are said to be "homoelectric", otherwise the two substances are said to be "heteroelectric".
Two homoelectric substances will feel the repulsive force exerted by each other; Two heteroelectric substances will feel the attraction exerted by the other to each other. The same charge repells each other, and the different charges attract each other. Electric charge is a fundamental conservation property possessed by many subatomic particles.
Charged particles are called "charged particles".
Law of Conservation of Electric Charge:
An electric charge can neither be created nor destroyed, it can only be transferred from one object to another, or from one part of an object to another. During the transfer, the total charge of the system remains the same.
A system with no charge exchange with the outside world, the algebraic sum of charges always remains the same. Amount of charge: The amount of charge. Unit: c; Minimum Charge: The amount of charge carried by an electron.
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In physics, the electrostatic interaction between the charges is achieved by an electric field, but the electric field does not need to be in direct contact with the charge to exert a force on it.
An electric field is a physical field that surrounds matter and is generated by electric charges. When a charge is placed in an electric field, it is subjected to the electric field force because the other charges in the field interact with it to produce an electric field.
According to Coulomb's law, the interaction force between the charges is related to the distance between them and the magnitude of the charge. The electric field force can propagate in space, and the charge only needs to exist somewhere in the electric field, without the need for direct contact with other charges.
In other words, the electric field is created by the electric charge in the space around Shoujing, without the need for actual material contact to produce an action. Even if there is a distance, the electric field force is transferred in the electric field and acts on other charges.
Therefore, the electric field force does not require an electric field to be in direct contact with the charge, it can act on the charge through the presence of the field, regardless of whether there is physical contact between them or not.
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The interaction force between electric charges is called the Coulomb force.
1. Coulomb force:
A law of physics was discovered by the French physicist Charles Coulomb in 1785, hence the name. Coulomb's law is the first ruler-carrying quantitative law in the history of electrical development. Therefore, the study of electricity has moved from qualitative to quantitative, which is an important milestone in the history of electricity.
2. Basic definition:
In a vacuum, the magnitude of the interaction force between the two stationary point charges q1 and q2 is proportional to the product of q1 and q2, and inversely proportional to the square of the distance r between them, the distance of the Coulomb force is proportional to the product of q1 and q2, and the direction of the force is along their lines, the same charge repels each other, and the charge of the different number attracts.
3. Conditions for establishment:
In a vacuum, it must be a stationary point charge. This is a study of the precise calculation or description of the correlation and ratio of the magnitude of the Coulomb force with the charge and charge distance in a momentary time point microscopic environment, rather than the absence of Coulomb force in a vacuum and at rest.
4. Coulomb force formula:
where q1 and q 2 are the charged charges of the two objects, r is the distance between the two objects (centers), and k is a constant.
The stationary interaction force between charged bodies. A charged body can be seen as being made up of many point charges, and the interaction force between each pair of stationary point charges follows Coulomb's law, also known as electrostatic force.
The role of Coulomb force in several fields:
1. Physics:
The Coulomb force is the main interaction force between electrons and nuclei in atoms and molecules. It is the basis for the construction of molecular and crystalline hand-side structures, influencing the properties and behavior of matter. In electrostatics, the Coulomb force explains the phenomena of electrostatic attraction and electrostatic repulsion.
2. Chemistry: The interaction between molecules and ions usually involves the Coulomb force. In chemical reactions, charge interactions between atoms can affect reaction rates, reaction pathways, and product stability. The formation and breaking of chemical bonds are also related to the Coulomb force.
3. Biology:
The structure and function of biomolecules are also affected by the Coulomb force. For example, the folding structure of proteins and nucleic acids and the binding of enzymes to substrates are regulated by the Coulomb force. Changes in charge distribution and Coulomb force also play an important role in neurotransmission and cellular communication.
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Summary. The charge is subjected to electrostatic force in the electric field.
The charge is subjected to electrostatic force in the electric field.
You've done a great job! Can you elaborate on that?
For example, if you place an electric charge in an electric field, it will be affected by the electric field and generate an electrostatic force. The magnitude of the electrostatic force is proportional to the amount of charge, proportional to the strength of the electric field, and inversely proportional to the square of the distance between the two charges. The direction of the electrostatic force is determined by the direction of the electric field and the positive and negative properties of the charge, the electrostatic force between the same sex charge is repulsive, and the electrostatic force between the heterogeneous Tan charge is attractable.
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The electric field is a special substance generated around the electric charge, which cannot be seen or touched, and its characteristic is to produce an electric field force on the charge in it.
Electric field strength: is a physical quantity that describes the strength and direction of an electric field.
Magnitude: The ratio of the electric field force to the charge charge in the electric field Definition: e=f q vacuum midpoint charge e=kq r 2 uniform electric field e=u d
Electric field force: f=qe
Direction: The direction of the electric field force of the positive charge is the same as that of the electric field; The negative charge is subjected to the opposite direction of the electric field force and the electric field.
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Summary. The charge is able to produce an electric field because of its electromagnetic properties. It produces an effect called "electricity" and can also transmit information through magnetic fields.
In addition, the electric field can also propagate through magnetic fields. When an object has a positive or negative charge, it creates a phenomenon called a "magnetic field". This magnetic field travels information out in a variety of ways, affecting surrounding objects.
Why is an electric charge capable of producing an electric field, and how does an electric charge produce an electric field? What is the nature of electric fields?
The charge is able to produce an electric field because of its electromagnetic properties. It produces an effect called "electricity" and can also transmit information through magnetic fields. In addition, the electric field can also propagate through magnetic fields.
When an object has a positive or negative charge, it creates a phenomenon called a "magnetic field". This magnetic field travels information out in a variety of ways, affecting surrounding objects.
The principle on which an electric charge produces an electric field is that when a charged particle is in an electrostatic field, it is moved by the force of the electric field. Since the charge itself has mass, it is acted upon by the inertial force determined by the mass of the object, which causes it to move in an electric field.
In addition, since the charge itself has an electric charge, it is also subjected to the electric moment exerted by the same or opposite charge, causing it to move in an electric field. Therefore, when a charged particle is in an electrostatic field, it will be acted upon by the force exerted by the mass of the object and the same or opposite charges, so that it will move in the electrostatic field and produce a new, independent, constant, three-dimensional spatially distributed, symmetrical, weakly polarized, and timeless electrostatic field.
An electric field is essentially a force field generated by charged particles, and it can describe the interaction between charged particles. It is an invisible, invisible energy field that can affect the motion of objects and can also propagate electromagnetic waves. Its intensity depends on the number and distribution of charged particles, and its direction is related to the positive and negative nature of the charge.
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Definition: The interaction between the charges takes place through an electric field. As long as there is an electric charge, there is an electric field around the charge.
The basic property of an electric field is that it acts forcefully on the charge placed in it, and this force is called the electric field force. The electric field force is the force exerted when an electric charge is placed in an electric field. or the force exerted in an electric field for a moving free charge.
Its magnitude can be derived from Coulomb's law. When multiple charges act at the same time, their magnitude and direction follow the vector operation rules.
Direction: The tangent direction of the positive charge along the electric field line and the opposite direction of the negative charge along the tangent direction of the electric field line.
Calculation: The formula for calculating the electric field force is f=qe, where q is the charge charge of the point charge and e is the field strength. Or by w=fd, it can also be found according to the distance between the work done by the electric field force and the motion in the direction of the electric field force.
Another important formula in electromagnetism is w=qu (where u is the potential difference between two points), which is derived from this formula.
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Answer: As long as there is an electric charge, there must be an electric field.
An electric field is a special substance present around an electric charge, and its property is to act on the charge placed in it to produce a force. The strength of the electric field around the point charge in a vacuum e=kq r 2, the direction starts from the positive charge and ends at infinity; or starts at infinity and ends with a negative charge.
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Having an electric charge does not necessarily have an electric field force. For example, a battery has an electric charge, but it does not necessarily have an electric field force.
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There is an electric field in the vicinity of the charge, and other charges in the vicinity of this charge are subjected to the electric field force of this charge.
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