What should I do if my child does not get started in the physics and electricity part of junior high

Need the essentials! It's like an ammeter is equivalent to an empty wire.

A voltmeter is equivalent to an open circuit.

These basic common senses must be known.

In one is to do more questions.

It's not like it's done and it's over when you know it's wrong.

Find out what's wrong.

You must ensure that if you use this question and do it again, you will definitely not make a mistake.

This is very important.

It's really not possible to buy a home electrical laboratory.

It's a big book like a sea of words.

There is an ammeter, a voltmeter only after opening.

There are many, many light bulb wires.

Probably this is the only thing that is used for junior high school physics and electricity knowledge.

Do it yourself and see it.

That's right. When you see the circuit diagram in the question, try to change the circuit diagram to the actual diagram.

Or change the physical diagram to a circuit diagram, regardless of what the diagram is.

True or false. Practice a lot, and by the end of the day, you'll be able to see the direction of the circuit clearly.

Because some of the drawings are easy to see with the real picture.

Some diagrams are easy to see with circuit diagrams.

Prepare him a notebook.

Copy all the mistakes.

Give him it every once in a while.

If it's wrong, keep doing it.

Until it's good.

This is the best way to improve your score.

I'm just tired.

It's useful though.

Interest is the best teacher, buy him various multimeters, as well as resistors, light bulbs, potentiometers (electronic stores have them), let him have fun on his own.

Electricity is an important part of physics, and it is very important to learn electricity well, so if you don't understand, you can ask the teacher more, understand the principle first, and then practice more, operate more, believe in yourself, and slowly you will feel that electricity has a taste. But if you have any questions, you can also come to me

This is mainly because the basic knowledge is not firm, junior high school electricity is actually nothing, just so many formulas to set up, to consolidate the foundation, and then to overcome psychological difficulties.

Learn more and watch more, in fact, electricity is very easy to learn, as long as you practice more, after doing the right answer, you will be able to do it over time.

This is my own experience.

Focus on the following concepts: current, voltage, resistance, electrical work, electric power. The following instruments:

Ammeters, voltmeters, rheostats. The following laws: Ohm's law, voltage, current, resistance, electrical power in series and parallel circuits.

An important experiment: measuring resistance.

Oh, my mom never cares about my studies.

Read it on your own. Find your own way.

Listen well in class.

Practice writing more.

No, just look at the explanation.

I'm also in junior high school, and I'm almost done learning electricity, so do you have a reference book for your child?

If you don't have one, I'll buy one.

And oh, I suggest you go buy a copy'Physical Package'

There is a whole junior high school physics knowledge in it.

There are also exercises for each knowledge point.

Not bad. You can try.

No, you can ask him.

Let's take a look at how other people write about some topics.

Sign up for a class and let an experienced teacher give you some advice. I just finished reading the teaching plan of Mr. Wang Kejia, a physics teacher at Essence School, and he happened to talk about electricity in this issue.

Hello, I'm glad to be able to provide you with an answer to the difficult content of physics and electricity in the third year of junior high school, and it is normal not to do it for a while, so it would be good to do more questions to understand. If you can't do the question, you must ask the teacher!Eliminate your doubts, don't half-understand ......Otherwise, I really don't know anything when I encounter a new problem, and I'm also studying electricity, which is difficult, but as long as I don't give up, I will definitely learn well

Encourage you

The learning method of physics and electricity in junior high school is as follows:

1. Clarify the concept of "short circuit".

In the textbook, only the concept of "overall short circuit" is given, "the circuit in which the wire is directly connected to the two poles of the power supply without passing through the electrical appliance is called a short circuit." "In the comprehensive problem of electricity, there is often a problem of local short circuit, if the wire does not pass through other electrical appliances and connects a certain electrical appliance (or a part of the circuit) end to end, it will form a local short circuit.

2. Identify series-parallel circuits.

Circuit diagrams are an important part of electricity. Junior high school electricity generally only requires two basic connections: series and parallel, and does not require mixed circuits. Distinguishing between series and parallel circuits is another difficulty that needs to be broken through in solving the comprehensive problem of electricity.

3. "** analysis method" to solve the problem.

There are many concepts and formulas involved in e-learning problems, and there are many clues to solve the problems, which are easy to make mistakes. To break through this difficulty, the key is to sort out a clear solution to the problem. ** column, list the four physical quantities of current, voltage, resistance and electrical power of electrical appliances.

** line, which lists the values of physical quantities such as electric current in each sub-circuit and total circuit, or the values of physical quantities in various states of electrical appliances.

Fourth, the analysis of "circuit changes".

When the switch is in different states, due to open circuit and short circuit, the connection mode between the electrical appliances in the access circuit and its electrical appliances generally changes, so the actual circuit in various situations should be drawn on the basis of the original circuit.

The main difficulty of physics and electricity in junior high school lies in the analysis of circuit diagrams and the use of various relationship operations.

If you want to learn junior high school electricity well, you need to 1. Learn to analyze the circuit diagram, and the current starts from the positive electrode and returns to the negative electrode, which is the most basic. If there is an ammeter and voltmeter in a circuit diagram, the meter method is used (the ammeter is regarded as a wire, and the voltmeter is regarded as an open circuit).

2. Find out the difference between the path (normal circuit), open circuit (the circuit cannot operate), and open circuit (directly connect both ends of the power supply, resulting in excessive current).

3. Write down the relevant formulas, such as: Ohm's law i=u r and its variants, Joule's law q=i rt, electrical power p=wt=ui

4. The relationship between voltage and current in series circuit and parallel circuit (series circuit: U becomes I unchanged and parallel circuit: I becomes U constant).

5. Learn to use the known quantities in the problem to find other values.

6. Find out the triboelectric uplift.

7. The resistance value of the fixed value resistor remains unchanged.

If you want to learn electricity well, you need to do a lot of problems until you are completely proficient in arithmetic, and in addition to that, you need to master general conclusions and phenomena.

During the exam: It is necessary to analyze the relationship between the circuit diagram and each value, and learn to use various formulas and their variations.

It's really hard to understand at first, take your time, first easy and then difficult, the circuit diagram will be easy later, just memorize the string of formulas that the teacher added.

Answer: First of all, you have to write down the formula, but not only to memorize, but also to be able to use more questions about the electricity part Practice makes perfect The amount of questions is enough, and when the time comes, you will know that you can use that formula when you look at the question and answer I also came here like this I remember that when I was in junior high school, I would not feel very difficult It would be good to brush up on the questions too much Junior high school physics is actually quite simple Come on (

Electricity is a very fascinating subject, and you can't live without it, because electricity can't be seen, heard, or perceived, and even many college students can't say, what is "electricity"? Therefore, learning must be synchronized with theoretical experiments, from shallow to deep, children can find a teacher with theoretical and practical experience to make up, or easy to understand, so that it is a wealth for the child's life.

It is recommended to buy a book to review physics for the high school entrance examination, and then sit quietly in your room and read it alone, it is enough to read it once, even the concept with example questions, and then do the accompanying exercises.

1. Find some questions about circuit diagrams first, such as drawing circuit diagrams according to physical drawings and drawing physical diagrams according to circuit diagrams. I did a total of 15 questions at that time, and I understood each question, and I was done. (You can add more according to your own situation).

2. You have to understand that electricity is like the flow of water. (The ammeter is equivalent to a wire, and the voltmeter is equivalent to an open circuit, I don't know if you have learned) to determine whether it is in parallel or in series. For example:

The current starts from the positive electrode and passes through. Back to the negative pole, you can easily judge the circuit.

3.If you design your own circuit, you will generally not depart from the textbook, and the circuit diagram in the textbook should be read carefully, learn to be flexible, and draw inferences from one another. If there is really no way, then draw out the electrical appliances and power supply first, and connect the wires according to the requirements, this method is good.

But first you have to understand the requirements of the question.

4.Don't be afraid to see a complex circuit, and slowly count according to the method in Article 2, you will definitely be able to judge, but you should consider the voltage, resistance, etc.

5.Ever since I pressed 1 to do 15 questions, I've been in love with electricity, and when I see a circuit diagram, I think about how it's connected, and when I see a physical diagram, I want to draw a circuit diagram.

6.You must understand the circuit diagram as soon as possible, otherwise it will be very difficult to learn voltage, resistance, Ohm's law, electrical work, electric heat, electric power, etc.

Does this still need to be verified? Examine your sister. Is there a learning method that works?

You go and buy a physics book to review for the high school entrance examination, and then sit quietly in your room and read it alone, it's enough to do it once, even the concept with example questions, and then do the side exercises, which is absolutely good.

In fact, there are only a few formulas in electricity, "p=ui"."p = u square ratio r""p=i squared times r" is all there is.

As for the shunt and pressure split, there is no need to be afraid of finding the ratio, and if you don't take the high school entrance examination, you can rest assured.

Just think about it, physics in the first year of high school is also difficult.

I'm also taking the high school entrance examination next year I don't understand electricity at all, the teacher speaks very fast, I can't understand when I ask and I was scolded by the teacher The basic may be a little bit Slightly difficult I can't even read the implicit conditions I can't read the hidden conditions in class every day I really don't know what to do I'm very anxious Every day because of this uncomfortable sleep every day is still very little.