Explain the physical problems of the magnetic phenomena section!

Pick B first makes sure that the answer is correct.

B: Right. The magnetic inductance lines around the magnet all come out of the north pole of the magnet and return to the south pole, while inside the magnet, the magnetic inductance lines are pointed from the south pole of the magnet to the north pole.

This is the theorem. The North Pole is the N-pole, and the South Pole is the N-pole

South) is the S pole, so the magnetic inductance lines outside the magnet all come out of the N pole of the magnet and return to the S pole" is also true.

C: False. The direction of the magnetic inductance line is the same as the direction of the magnetic field force experienced by the north pole of the small magnetic needle at this point, in other words, at a certain point of a magnetic field, the north pole of the small magnetic needle points to the direction of the magnetic field at that point.

For now, there is nothing wrong with choosing B.

Reason: The existence of magnetic monopoles cannot be confirmed at present, although there was an experiment in the last century that was successfully proven, but because this experiment was only done once, it could not explain the problem, and it was not widely approved by everyone. You can go down: Magnetic Monopole for a more in-depth analytical study.

If the magnetic monopole really exists, then the magnetic inductance lines at the n monopole come out of the n pole and end at infinity (similar to a positive charge); The S unipolar one comes out of infinity and returns to the S pole (similar to a negative charge).

If you don't choose B, you won't have the answer, so you don't have to think about it.

C, this seems to be a definition in junior high school or high school textbooks, the content is roughly that in the magnetic field, it is stipulated that the direction of force on the n pole of the small magnetic needle is consistent with the direction of the magnetic field where the small magnetic needle is located; The mistake of the question is to think that it is the s pole.

Summary. Hello, diamagnetics are polarized, which is divided into electropolarization, magnetic polarization, and polarization phenomena occur.

The phenomenon in which the electrode potential deviates from the equilibrium electrode potential when an electric current passes through the electrode is called electrode polarization. Polarization leads to a decrease in the voltage between the positive and negative electrodes of the battery after it is connected to the circuit, and also leads to an increase in the voltage required by the plating and electrolyzer after it starts working. Both are disadvantageous.

What happens when you put diamagnetism in a steady magnetic field? What will be the final state? The strength of its internal magnetic induction.

Hello, the polarization of the anti-filial piety magnet is divided into electropolarization and magnetic polarization, and polarization will occur. When an electric current passes through the electrode, the electrode slag rise potential deviates from the equilibrium electrode potential, which is called electrode extreme cautious leading. Polarization leads to a decrease in the voltage between the positive and negative electrodes of the battery after it is connected to the circuit, and also leads to an increase in the voltage required by the plating and electrolyzer after it starts working.

Both are disadvantageous.

Have a great day! Happy every day

What happens when you put diamagnetism in a steady magnetic field? What will be the final state? What is the expression of its internal magnetic induction intensity.

What happens when a conductor is placed in an electrostatic field? What will be the final state? What is the expression for its internal field strength?

The charge inside the conductor moves directionally under the action of an electric field. As a result, a section of the conductor gathers positive charges and one end of the conductor gathers negative charges. When the charge inside the conductor stops laughing down.

A balance has been struck as proof. However, the internal field strength of the conductor is just offset by the external field strength. Therefore, the internal field strength and the outer fissure bounded field strength are so much opposite.

Hello, the polarization of the anti-filial piety magnet is divided into electropolarization and magnetic polarization, and polarization will occur. When an electric current passes through the electrode, the electrode slag rise potential deviates from the equilibrium electrode potential, which is called electrode extreme cautious leading. Polarization leads to a decrease in the voltage between the positive and negative electrodes of the battery after it is connected to the circuit, and also leads to an increase in the voltage required by the plating and electrolyzer after it starts working.

Both are disadvantageous.

There is a magnetic field around the magnet, and in order to visually describe the magnetic field, magnetic inductance lines are introduced, and the tangent direction of any point above it indicates the direction of the magnetic field at that point, and the density of its distribution indicates the strength of the magnetic field

So the answer is: the tangent direction of any point; The degree of density of the curve distribution

The intensity of magnetic induction at a point in a magnetic field is related to (), .

a.The current that produces it.

b.The geometry and position of the conductor.

c.The magnetic permeability of the medium.

Correct answer: ABC

The property that the change of magnetic field intensity h lags behind the change of magnetic induction intensity leakage b is called the hysteresis desensitization of magnetic materials.

a.That's right. b.Mistake.

Correct answer: B

c. The solenoid generates a magnetic field in the same direction as the small magnetic needle. That is, the right end is the n-pole.

Extend your right hand and point your thumb at the n-pole, which is the right end. The direction of the four fingers is the direction of the current.

That is, in a solenoid, the current from the front is from the top down.

So a is the positive pole.

Determine the direction of the magnetic field generated by the current through the solenoid, with the right hand).

The magnetic inductance line inside the C magnet is from S to N, so the right end of the coil is the N pole, and the A end is the positive pole.

b The direction of the magnetic inductance line inside the coil is opposite to that of the outside.

Then use the right-hand rule.

c. The solenoid generates a magnetic field in the same direction as the small magnetic needle. That is, the right end is the n-pole.

Extend your right hand and point your thumb at the n-pole, which is the right end. The direction of the four fingers is the direction of the current.

That is, in a solenoid, the current from the front is from the top down.

So a is the positive pole.

Determine the direction of the magnetic field generated by the current through the solenoid, with the right hand).

Pick C (Khan made a mistake left and right at first).

Because the small magnetic needle is inside the magnetic field, the direction of the magnetic poles of the coil is the same as that of the small magnetic needle.

There is a right hand to judge the direction of the magnetic pole, and the coil current flows from the positive electrode to the negative electrode, so A is the positive electrode.

Choose C with the same pole, and the right is N

Gravity has a downward component of parallel rails.

Both the magnetic fields in Figures 1 and 2 have a component of a perpendicular rail upward and a component of a parallel rail.

The component of the magnetic field in Figures 3 and 4 is directed downward on a perpendicular rail.

The direction of the current is perpendicular to the paper flank inward, determined by the left hand, and only the magnetic field in the direction of the vertical guide will produce the ampere force in the direction of the parallel guide.

The rod must be subjected to the gravity parallel guide rail to the subordinate force, and this force must be balanced by the friction force and ampere force of Youtan, now the friction force is 0, then only the ampere force remains, so the ampere force must be along the inclined plane, (and the force in the vertical direction can not be considered, because as long as the force in the direction of the inclined plane is balanced, regardless of whether the rod has pressure on the guide rail, there is no relative movement trend between the rod and the guide rail, so there will be no static friction.) So choose AB