What is the effect of electric current on magnetic field, and what is the relationship between magne

Of course, there is, but indirectly, an electric current that can induce a magnetic field.

Magnetic fields, on the other hand, can interact with each other, and the magnetic fields induced by electric currents affect other magnetic fields.

Yes. It's electromagnetism.

The passage of electric current causes a change in the direction of the magnetic field.

When there is an electric current passing through the conductor, a magnetic field will be generated around it, I don't know what you mean by this?

The relationship between magnetic field and current is: for the same energized coil, the larger the current, the stronger the magnetic field strength formed by the energized coil, and the smaller the current, the weaker the magnetic field strength; For the same magnetic field to comeIt is said that the "partial" conductor of a closed circuit does the movement of cutting magnetic inductance lines in the magnetic field, and the faster the movement, the greater the current.

The principle of the generation of magnetic fieldsModern physics has proven that the ultimate structural composition of any matter is electrons (with a unit negative charge), protons (with a unit positive charge), and neutrons (externally shown to be electrically neutral). A point charge is a point of matter that contains excess electrons (with a unit negative charge) or protons (with a unit positive charge), so the cause of the magnetic field generated by the current can only be attributed to the magnetic field produced by the moving electrons.

The effect of the magnetic field on the electric current is as follows:

1. The effect of the magnetic field on the current is that the energized wire is subjected to the magnetic force in the magnetic field. Electrical energy is converted into mechanical energy.

2. The electron beam emitted from the cathode is bombarded on the long fluorescent screen under the action of high voltage between the cathode and the anode, and the path of the electron beam movement can be displayed on the oscilloscope.

3. Experiments show that in the absence of an external magnetic field, the electron beam moves in a straight line. If the tube is placed between the poles of a hoof-shaped magnet, the path of the electron beam shown on the phosphor screen is bent. This shows that the moving charge is indeed exerted by a magnetic field, and this force is often called the Lorentz force, which was first proposed by the Dutch physicist Lorentz.

The principle of the electric motor

With the rule of the left hand, stretch out your left hand, palm flat, thumb and other four fingers perpendicular, the four dots together, the magnetic field sensor wire passes through the palm so that the four fingertips follow the direction of the current, and then the thumb pointing direction will be the wire cable left hand magnetic trajectory. The effect of a magnetic field on an electric current** is complex. Its essence is the magnetic interaction between the moment generated by the moving charge and the applied electric field.

The motor is easy to use, reliable in operation, low in cost, and firm in structure, but the power factor is low, and the speed regulation is also difficult.

<>1. The magnetic field to the current is that the energized wire is subject to the magnetic force in the magnetic field. Electrical energy is converted into mechanical energy.

2. The electron beam emitted from the cathode, under the action of high voltage between the cathode and the anode, bombards the long phosphor screen to excite fluorescence, which can show the path of the electron beam movement on the oscilloscope.

3. Experiments show that in the absence of an external magnetic field, the electron beam moves in a straight line. If the tube is placed between the poles of the hoof-shaped magnet, the path of the electron beam shown on the phosphor screen is bent. This shows that the moving charge is indeed exerted by a magnetic field, and this force is often called the Lorentz force, which was first proposed by the Dutch physicist Lorentz.

Introduction to CurrentScientifically, the amount of electricity passing through any cross-section of a conductor per unit of time is called current intensity, referred to as electriccurrent. Usually represented by the letter i, its unit is the ampere (André Marie Ampere), from 1775 to 1836, the French physicist and chemist, who made outstanding achievements in the study of electromagnetic effects, and also contributed to mathematics and physics. The SI unit of electric current, the ampere, is named after its surname), abbreviated as "ampere", and the symbol "a", also refers to the directional movement of electric charges in a conductor.

Reason: According to Maxwell's equations, a changing electric field produces a magnetic field. Motion is a change, so the electric field of motion produces a magnetic field.

There is an electric field in the space around the charge, and the motion of the charge causes the electric field to move, so the moving charge produces a magnetic field. Electric current is the flow of electric charges, so the electric current creates a magnetic field. A constant magnetic field is generated around a constant current.

Since the magnetism of a magnet is the same as the current, the current is the movement of an electric charge, so in a nutshell, the magnetic field is generated by the change of the moving charge or electric field. From the point of view of modern physics, the only ultimate components of matter that can form an electric charge are electrons (with a unit negative charge) and protons (with a unit of positive charge).

The principle of the action of the magnetic field on the electric current is as follows:

1. The reason for the residual effect of the magnetic field on the force of the current or caution: the interaction between the two magnets occurs through the magnetic field. There is also a magnetic field around the electric current, and when it is placed into the magnetic field, the magnetic field will exert a force on the magnet, so the energized conductor is subjected to a force in the magnetic field, which is essentially an interaction between the magnet and the magnet.

2. The energized coil rotates in the magnetic field as shown in Figure A below, and a coil is placed <>

In the magnetic field, turn on the power supply, let the current pass through the coil, its AB edge and CD edge are up and down respectively, the coil will rotate in a clockwise direction under the action of these two forces, when the coil rotates to the position that the coil plane is perpendicular to the magnetic inductance line (as shown in Figure B), the direction of the force on the AB side and the CD side of the coil is not only opposite, the force line is also in a straight line, then the coil is subjected to a balancing force, and the coil will stop at this position (this position is called the balance position of the coil), So the energized coil can only turn for half a revolution at most in the magnetic field.

3. Distinguish two electromagnetic phenomena of electromagnetic induction and the effect of magnetic field on electric current: although the electromagnetic induction phenomenon and the effect of magnetic field on electric current, although they both reflect the connection between electricity and magnetism, these are two different electromagnetic phenomena.

Summary: The electromagnetic induction phenomenon is a part of the closed circuit in which the conductor acts by external force to cut the magnetic inductance line in the magnetic field, and the current is generated in the conductor. It can be seen that in the phenomenon of electromagnetic induction, mechanical energy is consumed, electrical energy is obtained, and a generator is made by using the phenomenon of electromagnetic induction.