A physical question is why the conductor generates heat and even glows when the current passes throu

It's very simple, but let's talk about your thoughts - first of all, there are very few good conductors of electricity in objects made of molecules (chemistry is not good, hehe) that can conduct electricity: free electrons, charged ions. So it's fair to say that I basically disagree with you.

So let me tell you my point of view, I read it in the book: How are photons formed? Light is an electromagnetic wave that is generated whenever there is a changing magnetic or electric field.

Therefore, it is only when there are electrons that photons are emitted outward. Therefore, electrons will "create" as soon as they have the slightest opportunity, and electrons will not be created if they have reached a certain amount.

As for heat generation, I think it is the electrons that move rapidly in the conductor, and because of the atomic force, the atoms also move, which is called "heat generation".

It seems too verbose, (*hee-hee.

First: light is an electromagnetic wave, which is generated due to electric charge**, and second: molecules or atoms or ions in solids, liquids and ultra-high-pressure gases (supercritical bodies) can be seen as tightly packed and close together.

Third: temperature is a measure of the thermal motion of an object, that is, a measure of the average kinetic energy (irregularly moving) of molecules or atoms or ions inside the object, the higher the temperature of the same substance, the faster the particle movement.

To sum up: when the particles are in thermal motion, they will hit the surrounding particles, and the tightly packed material particles can be regarded as a cage around the particles, and the particles are bouncing around in it, that is, **, and they will glow; The mass of particles of different substances is different, so when the temperature is the same, the kinetic energy of thermal motion is the same, and the rate of motion (i.e., ** rate) is different, and the frequency of the light wave emitted is different; For substances that are not tightly packed, the "cage" is very large, so the ** cycle is very long, and visible light is not emitted until the temperature is very high.

Therefore, the luminescence spectrum of high-temperature solids (such as conductors) is continuous, not the transition produced by the upstairs, but the discontinuous spectrum produced by the transition.

Basically true, but photons are not real particles, light particles are. Photons are one by one, and can only be thought of as a fragment of light waves from crest to trough. And the particles of light are like electrons, one by one.

All solids except absolute black bodies are radiating infrared rays, and the higher the temperature, the stronger the radiation, and the higher the infrared frequency, when the visible light wave is broken, we say that it emits light.

Heating is because the conductor has resistance to the electrons, and when the electrons pass through the conductor, they will do work to produce internal energy, causing the conductor to heat up; The light is emitted because the voltage is relatively too large, and the conductor has a high melting point that is not melted, just like the tungsten filament in a light bulb.

Classmate, Einstein's problem with photons didn't figure it out until he died! Hehe.

The electrons in the conductor are not completely free electrons and cannot be accelerated indefinitely under the action of an electric field. The electrons are accelerated in the electric field and gain energy, and when they move under the action of the electric field, they collide with the atoms in the conductor, and the energy is transferred to the conductor (resistance), and the resistance is heated.

The heat causes the temperature to rise, which causes the electron energy in the conductor to increase and jump up to a higher energy level, where it is unstable. It is possible to jump back to the original state at any time, and when you jump back, you will release the energy of the difference between these two energy levels. This energy is emitted in the form of photons, hence the formation of luminescence.

Luminous photons have the dual properties of wave and particle. As a wave, it has a distinction of frequency, infrared light, red light, which basically belong to **. The higher the frequency is, it is visible light, and the higher it is, what kind of light is emitted by the ultraviolet ---, depending on the energy state.

Around 600 degrees is mainly infrared light, and the higher the temperature, the higher the frequency.

The heat generated by the current through the conductor is related to the resistance of the conductor and the time of the electric current. The specific relationship is that the heat generated by the current code through the conductor is proportional to the square of the current, proportional to the resistance of the conductor, and proportional to the energizing time. The passage of an electric current through a conductor generates heat, which is the thermal effect of the electric current.

Experimental steps: 1. Connect two resistance wires, power supply, switch, and sliding rheostat in series to form a closed circuit, immerse the resistance wire in kerosene, and insert the lead wire and thermometer into the rubber plug to seal the nozzle.

2. Turn on the power supply, and observe the change of the thermometer after a period of time, the relationship between heat and resistance.

3. Change the current of the circuit through the sliding rheostat, and observe the relationship between the same resistance and the current after the same time of the thermometer indication change.

4. By observing the change of the thermometer, the relationship between the heat and the energizing time of the hand.

5. It is concluded that the heat generated by the current through the conductor is related to the resistance of the conductor, the intensity of the current passing and the energizing time, the larger the current, the greater the resistance and the longer the time, the more heat generated by the conductor.

In the experiment "What factors are related to the heat generated by the current through the conductor":

1.ApplicationConversion methodto compare how much heat is generated by the resistance wires. (Heating fiber panties of the same quality of kerosene).

2.ApplicationControl variable methodTo explore the factors that affect how much heat is generated by the current through the conductor.

3.Conclusion: the heat generated is related to the conductor itselfResistance, through the conductor'sCurrentand electrifiedTimeRelate.

The greater the resistance, the greater the current, and the longer the energizing time, the heat generatedThe more

In order to "what factors are related to the heat generated by the current through the conductor", Xiaocheng designed the experimental circuit shown. Flask.

There is kerosene of the same quality.

Close the switches S1 and S2, heat the kerosene with a resistance wire (where RA = RC RB) for the same time, and observe and record the thermometer in the flask.

The change in the indication.

Answer: 1) Resistance (2) Current (3) Remove flask B and close switches S1 and S2; (Or remove flask B, flask A and flask C in series, close switch S2) balance.

Weigh the same mass of water and the liquid to be measured with a balance.

Question analysis: (1) and (2) The heat generated by the conductor is related to the resistance, current, and energizing time of the conductor. When studying the relationship between the heat generated by the conductor and the resistance, the current and energizing time in the conductor should be controlled. When studying the relationship between the heat generated by the conductor and the current, the resistance of the conductor and the energizing time should be the same The method of this research problem is the control variable method.

Combined with the selected resistance wire for analysis and judgment. (3) From the endothermic formula Q suction = cm t, it can be seen that the specific heat capacity of an unknown liquid should be measured.

The mass m of the water and the unknown liquid in the two bottles should be equal, and the heat absorbed should be equal, and their increased temperature should be read out by a thermometer, and then the specific heat capacity of the unknown liquid should be calculated by using the formula deformation of the heat. Solution: (1) As can be seen from the figure, the resistance wire A and B are connected in series, then the current and power-on time in the resistance wire A and B are the same and noisy, and the resistance of r A and r B is not equal, and the relationship between the heat generated by the current through the conductor and the resistance is the relationship between the heat generated by the current through the conductor and the resistance (2) Because r A = r C, the resistance wire A and B are connected in series and then in parallel with the resistance wire C, so the current in the resistance wire A and C is different, and the resistance and energizing time of resistance wire A and C are the same, so ** is the relationship between the heat generated by the current through the conductor and the current (3) from the endothermic formula q suction = cm t, it can be seen that the mass m of the water and the unknown liquid in the two bottles should be equal, and the heat absorbed should be equal, in order to ensure that the absorbed heat is equal, the resistance, the passing current and the energizing time of the selected resistance wire should be ensured, so the flask B should be removed, and the flask A and flask C should be connected in series, and the switch S2 should be closed.

In order to make the mass m of the water and the unknown liquid equal between the two bottles, the same mass of water and the liquid to be measured should be weighed with a balance.

1)1.Transformation method 2Control variable method

2) Resistance, current squared, energizing time, how much (large).

1) Experimental Methods:

Use the comparative method to compare the amount of heat generated by the resistance wires;

Factors influencing the amount of heat generated by the current through the conductor by using the control variable method 2) Experimental conclusion: The heat generated through the conductor is related to the resistance of the conductor itself, the current through the conductor and the energizing time. The greater the resistance of the conductor, the greater the current through the conductor, the longer the energizing time, and the more thermal chaos is generated when the current passes through the conductor.

When the current passes through the conductor, the conductor will heat up, this phenomenon is called the thermal effect of the current There are many electrical appliances in life that sell the thermal effect of electric current, such as electric stoves, electric lights, hair dryers, electric mattresses, electric heaters, etc

Therefore, the answer is the middle void: thermal effect

The passage of an electric current through a conductor produces heat, a phenomenon known as the thermal effect of electric current.

Thermal effect refers to the heat absorbed or released by a system of matter when it only does expansion work in a physical or chemical isothermal process. According to the different properties of the reaction, it can be divided into burning heat, generating heat, neutralizing heat, dissolution heat, etc.

In the process of isothermal temperature, the heat absorption process of the system is different, including the heat of reaction (such as the heat of formation, combustion, decomposition and neutralization), the heat of phase change (such as the heat of evaporation, the heat of sublimation, the heat of melting), the heat of dissolution (the heat of integral dissolution, the heat of differential dissolution), the heat of dilution, etc.

According to the processes of isochoric and isobaric, the thermal effect can be divided into isochoric thermal effect and isobaric thermal rising effect. The thermal effect of the isochoric process is called the isochoric heat(ing) effect; The isobaric heat (ing) effect is called the isobaric heat(ing) effect.

Chemical reactions, phase change processes, etc. are generally carried out under isobaric conditions, so the relevant data listed in the manual are generally isobaric thermal effects. Since these processes are generally not accompanied by other work (only volumetric work), the isobaric thermal effect is equal to the increment of the enthalpy of the system, denoted by the symbol h. A negative value indicates that the process is exothermic.

This kind of data is widely used in scientific research, industrial design and production.

When an electric current passes through the conductor, it generates heat, and this phenomenon is called the thermal effect of voltage. (Which brother).

a.That's right. b.Mistake Li Yinxi.

Correct answer: B

1) When the resistance wire is energized, the current generates heat to increase the temperature in the bottle, so that the gas expands. The conversion method is to transform a phenomenon that is not easy to observe into a more obvious physical phenomenon; (2) From Xiaohong's scheme, it can be seen that the two resistors are connected in series, then it can be seen that the current in the circuit must be equal, and the heat generated in the two bottles should be related to the resistance from Joule's law, so the relationship between the heat generated by the current and the resistance can be improved; (3) The heat generated by the current through the conductor is related to the current, the size of the resistance and the energizing time, so the control variable method is applied when analyzing the amount of heat generated by the current through the conductor

Summary. Because when the direction of the current is different, the size of the resistance is different, and the size of the resistance is different, it will release heat or absorb heat.

2.Why is it exothermic or endothermic when the current in the conductor is in different directions?

Because when the direction of the current is different, the size of the resistance is different, and the size of the resistance is different, it will release heat or absorb heat.

1.Why is the electromotive force generated when the conductor has a temperature gradient?

Hold on. Because when there is a temperature gradient, electrons move.

When the electrons move to different poles, an electromotive force is generated.

Thank you.