The right hand theorem, not the right hand spiral theorem. Can anyone tell me about that? Thank you

Left-handed law: the left hand is flat, the thumb is perpendicular to the remaining 4 fingers, if the magnetic field lines enter the palm perpendicular, and the 4 fingers point to the direction of the current, then the direction of the thumb is the direction of the force on the current-carrying wire in the external magnetic field. This is electromagnetization into force, remember the word "force", the last stroke to the "left", with the law of the left hand.

The law of the right hand: the right hand is flat, the thumb is perpendicular to the other four fingers, if the magnetic field line enters the palm perpendicular, the thumb points to the direction of the wire movement, then the direction of the four fingers is the direction of the current induced in the wire. This is the law of magnetizing electricity, remember the word "electricity", and the last stroke is to the "right", with the law of the right hand.

Right-hand spiral rule:

The relationship between the direction of the magnetic inductance line and the direction of the current in the magnetic field of the energized straight wire can be determined by the method shown in the figure: if the right hand holds the wire, so that the direction pointed by the thumb is consistent with the direction of the current, then the direction of the curved four fingers is the direction around the magnetic inductance line. This is a static judgment formula.

There is no question of force.

Needless to say, the left-handed theorem and the right-hand theorem.

The right-handed spiral theorem is the right-hand theorem when judging electromagnetic induction, which is rarely used, and the spiral is just for the image.

The right hand is flattened, and the thumb is perpendicular to the other four fingers, if the magnetic field line enters the palm perpendicularly and the thumb points to the direction of the wire's movement, then the direction of the four fingers is the direction of the current induced in the wire.

The left hand is all generating power, the right hand is generating electricity, the left force is right, the left force is right, the right is electric, remember???

1. Different application scenarios:Electromagnetism.

, the right-hand rule mainly determines the direction independent of the force. If it's about force, it's all about the left-handed rule.

2. The derivation path is differentThe left-handed hand determines the direction of the force when it knows the magnetic field and the current. The right-hand hand determines the direction of the current when the magnetic field and the direction of motion are known.

Right-hand spiral rule precautions

1. The thumb points in the direction of the conductor's movement, not the magnetic field lines.

magnetic field) direction of motion. Just like when the motor starts, the rotor is not moving, in other words, the rotor guide is stationary, but there is a relative motion between the rotating magnetic field generated by the stator winding and the rotor guide bar.

According to the meaning of relative motion, the direction of motion of the stationary guide strip with respect to the rotating magnetic field is the opposite direction of the rotation of the magnetic field.

2. The four-finger pointing is the induced electromotive force.

direction, when the conductor is closed to the outer circuit, there will be an induced current.

And the direction of the induced current is consistent with the direction of the induced electromotive force. As we all know, the direction of electromotive force is opposite to the direction of voltage, so the direction of the induced current is the same as the direction of the induced electromotive force, which means that the direction of the induced current is opposite to the direction of the induced voltage.

The above content refers to the Encyclopedia - Right-handed Spiral Rule.

It's not the same. First, the nature is different.

1. Right-hand spiral rule: the rule that expresses the relationship between the direction of the magnetic inductance line of the current and the magnetic inductance of the current excitation magnetic field.

2. The rule of the right hand: the right hand is flattened, so that the thumb is perpendicular to the other four fingers, and all are in the same plane as the palm.

Second, the application is different.

1. Right-hand spiral rule application: It can be used to find the direction of the cross product of two vectors. Because of this use, in physics, the right-hand spiral rule can be used whenever a cross product occurs.

2. Application of the right-hand rule: the rule that determines the direction of the induced current in the wire moving in the external magnetic field, also known as the motor rule. It is also the law for judging the relationship between the direction of the induced current, the direction of the conductor movement, and the direction of the magnetic field lines.

The right hand is the direction of the induced current generated by the wire cutting the magnetic inductance line, the thumb points to the direction of the wire movement, and the four-finger direction is the direction of the induced current.

The left-hand rule stipulates that the left hand is stretched so that the thumb is perpendicular to the four fingers, the palm of the hand is towards the n pole of the magnetic field, the direction of the four fingers is consistent with the direction of the current in the conductor, and the direction pointed by the thumb is the direction of the conductor in the magnetic field. (Both the Lorentz force and the ampere force are determined by the left-handed rule).

The right-hand rule refers to the magnetic field generated by a straight-through wire, that is, the current of one wire, so that the thumb points in the direction of the current, and the other four fingers hold it, then the direction of the four fingers around is the direction of the magnetic field it produces.

The right-hand spiral rule refers to the magnetic field generated by the energized coil Hold the coil with four fingers and point in the direction of the current in the coil, then the thumb pointing is the direction of the magnetic field it generates.

No, Ampere's rule usually refers to the right-hand spiral rule, which is the magnetic field generated by an energized coil.

Left-handed rule: It is used to determine the direction of force on an energized wire in a magnetic field. The magnetic field lines pass through the palm of the hand, the four fingers point in the direction of the current, and the thumb direction is the direction of the force.

The right-hand rule: The direction of the "current" is sensed in the wire used to make a cutting motion in a magnetic field. The magnetic field lines pass through the palm of the hand, the thumb points in the direction of the current, and the four fingers in the direction of the "current".

Right-hand spiral rule: single wire: grasp the wire by hand, four fingers for the direction of magnetic field surrounding, thumb for the direction of current; Coil: thumb is the direction of magnetic field surrounding, four fingers is the direction of current;

Right-hand spiral rule:Also known as Ampere's rule, it is a rule that expresses the relationship between the direction of the magnetic inductance line of the electric current and the magnetic field excited by the current. Ampere's rule in energized straight wire (Ampere's rule 1): Hold the energized straight wire with your right hand and let your thumb point in the direction of the current, then the four fingers point in the direction of the magnetic inductance line; Ampere's rule in energized solenoids (Ampere's rule II):

Hold the energized solenoid with your right hand so that the four fingers point in the direction of the current, then the end of the thumb is the n pole of the energized solenoid.

The left-handed ruleIt is a law that determines the relationship between the direction of the ampere force f (or motion), the direction of the magnetic induction intensity b, and the direction of the current i of the energized conductor rod when the energized wire is in a magnetic field.

Judging Ampere:

The direction of the force of the wire in the magnetic field. According to the left-hand rule: extend the left hand, so that the thumb is perpendicular to the other four fingers and in a plane, let the magnetic inductance line flow from the palm of the hand, the four fingers point in the direction of the current, and the thumb points to the direction of ampere force (that is, the direction of the conductor force).

Judging the Lorentz force:

Flatten the left palm so that the magnetic lines pass through the palm of the hand, the four fingers represent the direction of the current, and the direction of the thumb perpendicular to the four fingers is the direction of the Lorentz force. Note that the moving charge is positive, and the pointing of the thumb is the direction of the Lorentz force. Conversely, if the moving charge is negative and the direction of the charge motion is still indicated by four fingers, then the opposite direction of the thumb is the direction of the Lorentz force.

The relationship between the two: The ampere force is the net force of the Lorentz force on the charge moving directionally within the conductor.

When the direction of the current is parallel to the magnetic field, the directional direction of movement of the charge is also parallel to the direction of the magnetic field, and the Lorentz force is zero, and its resultant ampere force is also zero.

Lorentz force does not do work because the direction of the force is perpendicular to the direction of motion of the particle, according to the formula of work w=fscos, at =90°, w=0. The ampere force is perpendicular to the direction of the current in the wire, not necessarily perpendicular to the direction of movement of the wire, and is generally in the same straight line, so the ampere force workmanship is not 0.