In the second year of high school, tell me about it, I can t tell if the charge has an effect on the

1.The charge q has an effect on the potential energy. The electric potential energy ep=qu is related to the field source charge q and is also related to the zero potential.

For example, if there are two points A and B on an electric field line, and E is from A to B, ask whether the positive and negative charges are from A-B and B-A respectively, whether the electric field force does positive or negative work, and whether the potential energy of the charge increases or decreases? e is from a to b, and the electric potential decreases along the direction of the electric field line, i.e., ua>ub (u is the potential), 1).

The positive charge is from a-b and q>0 respectively, and the change in electric potential energy is ep2-ep1=q*(ub-ua) <0, and the negative sign indicates that the electric potential energy decreases, so the electric field force does positive work.

2).The negative charge is from a-b , q<0 respectively, and the change in electric potential energy is ep2-ep1=q*(ub-ua) >0, and the positive sign indicates that the electric potential energy increases, so the electric field force does negative work.

3).The positive charge is from b-a, q>0 respectively, and the change in electric potential energy is ep2-ep1=q*(ua-ub) >0, and the positive sign indicates that the electric potential energy increases, so the electric field force does negative work.

4).The negative charge is from b-a, q<0 respectively, and the change in electric potential energy is ep2-ep1=q*(ua-ub) <0, and the negative sign indicates that the electric potential energy decreases, so the electric field force does positive work.

Generally refers to the source charge of the electric field you are studying, i.e., the object of study. There is an electric field around the charge, and in order to study the characteristics of the electric field force, a point charge Q is generally introduced, which is called the test charge. In fact, the charge also generates its own electric field, but it can't be too strong here, that is, it can't affect the electric field q you are studying, for example, e=f q, where e is the electric field of q, and q is the test charge, q is unsigned, because e is related to q, not q.

f is the electric field force between q and q, i.e., f = (q*q)*k) (r 2), and the direction of f is the direction in which the force is specified on the charge.

3.Electric potential energy ep=q*u (u is the electric potential), q is the amount of electricity that introduces a charge, with a positive and negative sign. The change in electric potential energy is ep2-ep1=q*(u2-u1), and if the electric field force does positive work, the electric potential energy decreases.

Otherwise, it increases. where u2-u1 is the potential difference, and if it is a uniform electric field, u2-u1 = ed

It can be seen that the work done by the electric field force is related to the point charge q, whether it is electric potential energy, electric potential, electric field, and field strength, all of which are related to the field source charge.

The team will answer for you.

Charge has no effect on the electric potential You think of the electric potential as "height", you are a small electric charge, how can you stand on the top of the mountain have an effect on the height of the mountain. Positive work is effortless work, and the direction of force and the direction of movement are in the same trend is positive work. Second, since the farthest point is generally regarded as a zero electric potential surface, this positive value is certain.

The last question, so to speak, is relevant. However, the electric potential energy depends on what you put in it, and the electric potential depends on the zero electric potential surface. Hope it works for you.

In an electric field, a charge comes from a certain point.

The ratio of the electric potential energy to the amount of charge it carries is called the electric potential of du to do this point (zhi can also be called potential). Electric potential is a physical quantity that describes an electric field in terms of energy from a DAO. Suppose we set a point A as a potential point of 0 (note that it is a point), if the potential of point B is 5, then the potential difference from point A to point B is 0-5=-5, and the potential difference from point B to point A is 5-0=5, and the potential difference can be compared with the height difference.

The electric potential can be compared with the height h in the gravitational field, the magnitude of the charge determines the magnitude of the electric field strength, and the integral of the electric field strength to the distance is the electric potential difference, so the electric potential difference is related to the electric charge, but it is definitely not a simple positive and inverse proportional relationship. The electric potential is independent of the charge, which is said to be independent of the tentative charge.

The unrelated electric potential can be compared to the height h in the gravitational field.

Charge can be compared with mass.

The quality does not affect the h

So you get the idea.

Here is the issue of electrostatic induction. Think broadly. The B conductor is first induced by electrostatic electricity with an equal amount of dissimilar charge at both ends, and after grounding, the B conductor becomes a whole with the earth.

That is, into a large conductor. The B conductor becomes near A, which induces a different charge (negative charge) from point A, and at the far A end (you can't see it), the other side of the earth induces the same charge (positive charge) as A. So let's talk about the back b is only negatively charged.

The answer is not true, both the left and right sides of conductor b will have a negative charge.

The answer is not true, probably the left and right sides of the conductor will have a negative charge.

No, because of the positive charge, conductor B is still electrified.

①.For electric charge, it can only be said that the electric potential energy is for a certain point, because the electric potential is only for a certain point.

For the first question, it can also be said to be the electric potential, because the point charge can also be seen as a point] along the direction of the electric field line, the electric potential gradually decreases, which is certain.

This is not necessarily the case with electric potential energy, for example, the potential energy of a positive charge gradually decreases along the direction of the electric field line; The principle is: electric potential energy = amount of charge x electric potential , since the electric potential gradually decreases along the direction of the electric field line, so the electric potential energy also gradually decreases.

But this is not the case with negative charges, and the potential energy of a negative charge along the electric field lines increases gradually according to the above principle.

For the first question, it depends on the charge, if it is two positive charges with equal charge, then the potential of the two points where they are located is the same. [The main thing is to look at the position of the electric field line where they are located, and so on in other cases].

I won't talk about it here

As for electric potential, I think you still have a bit of a vague idea of him. It is recommended that you check it out first:

Hope it helps.

1. Using the definition of the electric potential difference: U=W q, it can be seen that the electric potential decreases in the direction of the electric field line.

2. The key to this problem is to find out the distribution of the electric field, and to know that the two points of Mn have the same kind of charge: if it is a negative charge, the direction of the electric field line will reach Mn from infinity. If positively charged, the electric field lines are in the direction of MN to infinity.

From the conclusion of question 1, the electric potential decreases along the direction of the electric field line, and the conclusion can be obtained. . .

Your first question is inexplicable! But it doesn't affect my answer. You haven't figured out what electric potential is.

The definition of electric potential is the work done by the electric field force when the unit positive charge moves from a point A in the electric field to the reference point O (i.e., the zero potential energy point, which is generally taken as the zero potential energy point at infinity or the earth). As long as the charge distribution is not pervasive in the whole space, as long as it is distributed in a finite space, it is customary to use infinity as the reference point. For example, in a system composed of two positive charges, you can find the potential at each point according to the definition!

Imagine a unit point charge that moves from a point to infinity. You have to compare the electric potential of any two points to move the positive charge from c to d, and look at the positive and negative work done by the electric field force, positive means c is higher than d, and negative means lower. So the key problem is to find the electric field, and then find the positive or negative work done along any path (the electric potential is a function of spatial position, and the result is unique no matter what path is chosen).

Generally speaking, high school will also investigate the potential relationship of special points, for example, on the vertical surface of ab, the more outward, the lower the potential, but the field strength increases from 0 to 0 and then decreases to 0! There is no direct relationship between field strength and electric potential!

, in the circuit part, the current goes from the positive to the negative, that is, the electrons go from the negative to the positive; But inside the power supply, the current goes from the negative to the positive, i.e., the electrons go from the positive to the negative. The questioner asks whether the charge will be neutralized because the battery generates an electromotive force that moves electrons from the positive electrode to the negative electrode, and for this reason, a continuous current is generated when the circuit is turned on. In fact, the voltage of the battery refers to its electromotive force, inside the power supply, the electrons are sent from the positive electrode to the negative electrode, which is carried out by consuming the chemical energy of the battery chemicals, which is essentially the chemical energy converted into electrical energy, of course, due to the limited mass of the reactants, it is difficult to use at a certain stage, which is what we often say, the battery has no electricity.

If there is no battery, and there is an equal amount of dissimilar charge at both ends of the electrode at the beginning, then the wires will be quickly neutralized.

Voltage is the power that generates the current, the voltage is in, the current is in.

In your words, it will be neutralized, but the voltage is continuous, and the neutralization is continuous, and the current is continuous.

1.Elementary particles that are positively and negatively charged are called electric charges, and positively charged particles are called positive charges (the symbol is " "Negatively charged particles are called negative charges (the symbol is " ".

2.The meta-charge is the smallest amount of electricity that exists in nature as measured by experiments. One of the fundamental constants of physics. The basic charge e coulomb. is the amount of electricity carried by an electron or a proton. The charge of all charges is an integer multiple of the basic charge.

3.The amount of electricity is the amount of charge.

4.Charge refers to the elementary particles with positive and negative charges, electrons and protons also belong to electric charges, electrons and protons are the elementary particles that make up atoms, electrons are negatively charged, rotating at high speed outside the nucleus, and protons are positively charged and uncharged neutrons together form the nucleus.

5.When the two balls cannot be regarded as dot electromorphosis rolling dry charges, it means that the distance between the two balls is small, which will affect the distribution of charges on the balls.

When the same kind of charge is carried, the two spheres are repelled by the holes and move away from each other, and the actual distance is greater than the distance r of the two spheres, so the f is smaller than that of Coulomb's law r and the distance between the spheres.

When there is a heterogeneous charge, the two spherical charges attract each other and are close to each other, and the actual distance of the charges is less than the distance r between the two spherical centers, so the f is greater than the distance between the spherical centers using Coulomb's law r.

The formula for the relationship between voltage and charge: UAB = WAB Q

Potential difference. Definition of Voltage Nanospar:

The charge Q moves from point A to point B in the electric field, the electric field force.

The work done is wab with the amount of charge q

The ratio is called the sum of the potential difference between the two points of AB (the difference of the electric potential between the two points of AB, also known as the potential difference, is expressed by UAB by UAB and formula: UAB = WAB Q

where WAB is the work done by the electric field force and Q is the amount of electric charge.

If you refer to the relationship between charge and voltage in the capacitor, then the closed ear code is related to the positive area of the two poles of the electric car, and the distance between the two stages of the family is related to the medium, assuming that the positive area of the two poles of the capacitor is unchanged, the distance is unchanged, and the type of medium is unchanged, then the more charge accumulated on the two plates, the greater the voltage between the two plates.