What is the main content of physics in the second year of high school? . . It is said to be very dif

The physics backbone of the second year of high school is electric field, constant current, magnetic field, additional: mechanical waves, thermal, optics, relativity, momentum, electromagnetic waves, atomic physics, etc.

Because the third year of high school requires total review, it is difficult and large to complete all the courses. However, as long as you listen carefully, you will have no problem practicing properly.

Electric field, constant current, magnetic field are more important. It's a bit abstract at first, so use your brain. These occupy a large part of the college entrance examination, including experiments and calculation questions. It's all about practice.

The latter is just a large amount and focuses on textbooks. And if you don't finish these studies, different regions will learn differently. For example, I studied mechanical waves, thermal, optics, and relativity.

Last semester, the main topics were calculations and experiments.

The second semester will be dominated by multiple-choice questions and small calculations (thermal and optical requirements vary in different regions).

It's very good, it's all interesting.

Don't be nervous, just study hard.

of electric field. Some of them are Ohm's law or something, which you should have learned in junior high school. In general, the electric field strength part is more difficult, but it is okay.

Mainly in electromagnetism. Among them, the motion of charged particles in the field is the focus and difficulty of the calculation questions in the college entrance examination, and the electrical experiment is the key and difficult point of the experimental questions. The others are mechanical waves, electromagnetic waves, relativity, quantum mechanics or something, and the test is not very deep, just remember the conclusions.

You can rest assured, it has little to do with the first year of high school, in fact, it is simpler than the first year of high school, because there are several electives (different courses in different regions), mainly concepts. So you have to listen carefully in class...And the electric field, magnetic field, etc., should be careful, although the topic is similar, but the change is quite large.

The chapter on physics, electricity, and electromagnetic induction in the second year of high school is the most difficult. Electronic induction interiors often combine electricity, mechanics, and magnetic fields to learn all the knowledge together. There are many aspects of knowledge that can often leave you at a loss.

In particular, it tests a person's comprehensive ability and physics literacy in physics. It needs to start from a point and analyze it and push it to the surface. In addition, the finale of physics calculation in the college entrance examination often contains questions related to electromagnetic induction.

So electromagnetic induction is the hardest.

Learning styleMemory: In the study of high school physics, we should memorize the basic concepts, laws and some of the most basic conclusions, that is, the so-called most basic knowledge that we often mention. Students often ignore the memorization of these basic concepts, thinking that learning physics does not need to memorize these textual things, and as a result, when students are asked about physics concepts in the general review of the third year of high school, few students can say them accurately, even for students in cram schools.

Accumulation: It is the work after memorization in the process of learning physics. On the basis of memorization, we continue to collect a lot of relevant information about physics from textbooks and reference materials, some of which come from a question, some from an illustration of a question, or a short reading material, etc.

In the process of collecting and sorting, we should be good at analyzing and classifying different knowledge points, and find out the similarities and differences in the process of sorting, so as to facilitate memory.

In the second year of high school physics, students mainly study mechanical vibrations, mechanical waves, conservation of energy in molecular thermal motion, gases, electric fields, constant electric state currents, magnetic fields, electromagnetic induction, alternating currents, electromagnetic fields, and electromagnetic waves.

1. Mechanical vibration refers to the regular reciprocating motion of an object or particle near its equilibrium position. The strength of the vibration is measured by the amount of vibration, which can be the displacement, velocity, or acceleration of the vibrating body.

2. The phenomenon of electromagnetic induction refers to the fact that a conductor placed in a changing magnetic flux will produce an electromotive force. This electromotive force is called induced electromotive force or induced electromotive force, and if this conductor is closed into a loop, the electron force will drive the flow of electrons, forming an induced current (induced current).

3. The basic properties of the electric field: the electric field has a strong effect on the charge placed in it; This force is called the electric field force; Electric field strength: the ratio of the electric field force f to the amount of charge q at a certain point in the electric field is called the electric field strength of that point;

4. Electric potential: the electric potential of a certain point in the electric field is equal to the work done by the electric field force when the unit positive charge moves from that point to the zero electric potential point; It is relative, and related to the selection of the zero potential surface; The electric potential is a scalar quantity and the unit is volts v.

5. The relationship between the electric field strength and the electric potential difference: in a uniform electric field, the electric potential difference between two points along the direction of the field strength is equal to the product of the field strength and the distance between these two points. Mathematical expression: u=ed; This formula only applies to uniform electric fields.

Electric potential

The scalar potential of the electrostatic field is called the electric potential, or the electrostatic potential. In the electric field, the ratio of the potential energy of a charge at a certain point to the amount of charge it carries (related to positive and negative, and the potential energy and the positive and negative of the charge can be judged by bringing in both the potential energy and the positive and negative of the charge in the calculation), which is called the electric potential of this point (also known as potential), which is usually expressed by .

Electric potential is a physical quantity that describes an electric field in terms of energy, and electric field strength describes the electric field in terms of force. The potential difference can generate an electric current in a closed circuit (when the potential difference is considerable, an insulator such as air can also become a conductor). The electric potential is also known as the potential.

What do you learn in physics in the second year of high school as follows:

Section 1: Understanding Static Electricity.

1. Electrostatic phenomenon.

1. Understand common electrostatic phenomena.

2. The generation of static electricity.

1) Triboelectric Electrification: The glass rod rubbed with silk is positively charged, and the rubber rod rubbed with fur is negatively charged.

2) Contact electrification.

3) Induction of electricity.

3. The same kind of charge repels each other, and different charges attract.

2. The law of conservation of electricity and charge of matter.

1. The atomic structure of matter: Matter is composed of molecules, atoms, and atoms are composed of positively charged nuclei and negatively charged electrons moving around the nucleus. The nucleus, in turn, is made up of protons and neutrons.

Protons are positively charged, neutrons are uncharged. In general, the number of electrons in the atoms inside the object is equal to the number of protons, and the whole object is uncharged and electrically neutral.

2. The law of conservation of charge: the total number of charges in any isolated system remains the same. Inside a system, electric charge can be transferred from one object to another. But in this process the total charge of the system does not change.

3. Analyze the electrostatic phenomenon by the atomic structure of matter and the law of conservation of charge.

1) Analyze triboelectric activation.

2) Analyze contact power-up.

3) Analyze induced electrification.

4. The essence of the charged object: in the process of charge transfer, the electric side shouting charge does not arise or disappear.

Section 2: Charge-to-charge interactions.

1. Charge amount and point charge.

1. Charge: The amount of charge carried by the object is called the amount of charge, referred to as electricity. The unit is the coulomb, referred to as the library, which is represented by the symbol c.

2. Point charge: The shape, size and charge distribution of the charged body have a negligible influence on the interaction force, in this case, we can simplify the charged body to a point and call it a point charge.

Second, the test of the amount of charge.

1. Testing instrument: electroscope.

2. Understand the working principle of electroscope.

3. Coulomb's law for transportation and leasing.

1. Contents: The Coulomb force of interaction between two stationary point charges in a vacuum is proportional to the product of their charges, inversely proportional to the square hail of their distance, and the direction of the force is on their lines.

2. Size: Direction: On the line of two electric charges, the same sex repels each other, and the opposite sex attracts.

Electricity Chapter 1 Interaction of Electric Charges Electrostatic Phenomena and Conservation of Electric Charge **Law of Charge Interaction Static Electricity and Life Chapter 2 Electric Fields and Oscilloscopes **Properties of the force of the electric field Study of the energy properties of the electric field (1) Study of the energy properties of the electric field (2) Capacitors Capacitance **Movement of the electron beam in the oscilloscope Chapter 3: From the Meter to the Integrated Circuit, Learn to Use Multiple Meters Studying Current, Voltage, and Resistance **The Law of Resistance Analysis and Design of Multimeter Circuits Logic Circuits and Integrated Circuits Chapter 4** Ohm's Law for Closed Circuits **Ohm's Law for Closed Circuits Measuring the electromotive force and internal resistance of the power supply Typical Case Study Analysis of Energy Conversion and Conservation in Circuits Chapter 5 Magnetic Fields and Cyclotrons Magnetism and Human Civilization How to Describe a Magnetic Field **Magnetic Field Around an Electric Current **Ann Demolition Wheel Peili**Loren Magnetism Loren Magnetism and Modern Technology This is what I copied from a book, you can read the travel letter.

Elective 3-1 (Electrostatic Field, Constant Current, Magnetic Field).

Elective 3-2 (Electromagnetic Induction Alternating Current Sensor).

Then choose one of 3-3 3-4 3-5.

Then I reviewed it in the third year of high school.

The days are fast.

Chapter 9 Mechanical Vibration Copying.

Chapter 10 Mechanical Waves.

Chapter 11 Molecular Thermal Motion Conservation of energy.

Chapter 13 Gases.

Chapter 14 Electric Field.

Chapter 15 Constant Current.

Chapter 16 Magnetic Fields.

Chapter 17 Electromagnetic Induction.

Chapter 18 Alternating Currents.

Chapter 19 Electromagnetic Fields and Electromagnetic Waves.

In fact, physics is not just a theory and formula, nor is it a question on the test paper, physics is all around you. I recommend "Grimace Physics Lesson", ** penmanship to write the history of physics, very interesting.

Electricity, magnetism, thermal, optics, electrostatic fields, conservation of momentum (very important), and many more.

In the first semester, students will take compulsory 2, and in the next semester, they will take elective courses 3-1 and 3-2

1. The first volume of the second year of high school (electricity).

Main contents:1Interaction of electric charges.

2.Electric field and oscilloscope.

3.Chapters range from electricity meters to integrated circuits.

4.Ohm's law for closed circuits.

5.Magnetic fields and cyclotrons.

2. The second volume of the second year of high school is elective.

Main content: 1.Electric field.

2.Constant current.

3.Magnetic field. 4.Electromagnetic induction.

5.Alternating current.

6.Electromagnetic oscillations of electromagnetic waves.

7.Reflection and refraction of light.

8.The nature of light.

9.Atoms and nuclei.

I studied the old textbook, learning the momentum theorem, the conservation of energy, the simple harmonic motion, the waves, the thermal energy.

Electricity Chapter 1 Interaction of Electric Charges Electrostatic Phenomena and Conservation of Electric Charge **Law of Interaction of Electric Charges Static Electricity and Life Chapter 2 Electric Fields and Oscilloscopes 21** Properties of the force of the electric field Study of the energy properties of the electric field (1) Study the properties of the energy of the electric field (2) Capacitors Capacitance **Movement of the electron beam in the oscilloscope tube Chapter 3 From the Meter to the Integrated Circuit Learn to use multiple meters to study current, voltage, and resistance **The Law of Resistance Analysis and Design of Multimeter Circuits Logic Circuits and Integrated Circuits Chapter 4 **Ohm's Law for Closed Circuits **Ohm's Law for Closed Circuits Measuring the electromotive force and internal resistance of a power supply Case Study of Energy Conversion and Conservation in Circuits Chapter 5 Magnetic Fields and Cyclotrons Magnetism and Human Civilization How to Describe the Magnetic Field **Magnetic Field Around Electric Currents **Ampere Force**Loren Magnetism Loren Magnetism and Modern Technology This is what I copied from a book, so let's take a look.