- Is it possible to create an electric charge?
- Do we create an electric charge when electrifying?
- Can a charge exist independently of a particle?
- A body whose total positive charge of particles is equal to the total negative charge of particles is...
- The force of interaction between charged particles as the charge of any of these particles increases...
- When charges are placed in a medium, the force of interaction between them...
- With an increase in the distance between charges by 3 times, the interaction force...
- The quantity characterizing electrical properties environment is called...
- In what units is electric charge measured?
- Which physical quantity determines electromagnetic interaction?
- What is the name of the process that leads to the appearance of electrical charges on bodies?
- Is it true that the closed system does the algebraic sum of the charges of all bodies in the system remain constant?
- Answers
- Neutral
- Increases
- Decreases
- Reduces by 9 times
- Dielectric constant
- In pendants
- Electric charge
- Electrification
- Electric field
- What types of matter do you know?
- What is the field of stationary charges called?
- What is the source electric field?
- The main property of any electric field?
- What is the force with which charges interact called?
- What is the name of the physical quantity equal to the ratio of the force acting on a charge from the electric field to this charge?
- Write down the formula for the electric field strength of a point charge.
- In what units is electric field strength measured?
- How will the tension change with increasing electric charge?
- How does the voltage change as the distance from the point to the charge increases?
- How will the force acting on the charge change if the electric field strength is doubled?
- What charge is placed in electric field, if the vector of force acting on the charge coincides with the direction of the tension vector?
- Answers
- Matter, field
- Electrostatic
- Charge
- Action on electric charges
- Kulonovskaya
- Electric field strength
- E = kq/r2
- N/cl = V/m
- Will increase
- Will decrease
- Will increase 2 times
- Positive
- Work of forces electrostatic field. Potential difference
- If the work done by field forces along any closed trajectory is zero, then the field is called...?
- On what quantities does the work of electric field forces depend?
- Does the work done by electric field forces depend on the shape of the trajectory?
- What is the energy characteristic of the electric field?
- In what units is it measured?
- Does the value of the potential depend on the choice of the zero level?
- Express volts in terms of other units.
- What is the work done by the electric field forces when moving a charge perpendicularly? power lines fields?
- When finding the common potential of several electric fields, all potentials...
- What is the work done by Coulomb forces on a closed path?
- What is voltage in electrostatics?
- How is voltage measured?
- What are surfaces of equal potential called?
- How are voltage and tension related in a uniform electrostatic field?
- Answers
- Potential
- From charge, voltage, distance
- Potential
- In volts
- J/C
- Adds algebraically
- Potential difference
- Volt
- Equipotential
- U = E d
- "Specters"
- 1. Light sources are...
- A. Atoms.
- B. Molecules.
- B. Atoms and molecules.
- 2. A spectrum in which the width of the color bands is approximately the same is called...
- A. Prismatic. B. Diffraction.
- B. Solid.
- 3. A spectrum that contains a specific set of wavelengths is called...
- A. Solid. B. Ruled.
- B. Striped.
- 4. The spectrum in which all wavelengths are represented is called...
- A. Solid. B.- Ruled.
- B. Striped.
- 5. A spectrum in which spectral lines are combined into groups separated by dark spaces is called...
- A. Solid. B. Ruled.
- B. Striped.
- 6. What spectrum does hot metal produce?
- A. Solid. B. Ruled.
- B. Striped.
- 7. Bodies consisting of excited molecules that do not interact with each other give spectra...
- A. Solid. B. Ruled.
- B. Striped.
- 8. What spectrum can be observed using a spectroscope from a hot spiral of an electric light bulb?
- A. Solid. B. Ruled.
- B. Striped.
- 9. Atom of each element:
- A. Emits and absorbs a random set of wavelengths. B. Emits and absorbs a specific set of wavelengths.
- B. Emits an arbitrary set of wavelengths and absorbs a specific set of wavelengths.
- 10. How do the line emission spectra of various chemical elements differ?
- A. Number of lines.
- B. The number and location of lines.
- B. Number, location and color of lines.
- 11. According to Kirchhoff’s spectral law, the atoms of each chemical element absorb only those rays that...
- A. They emit themselves.
- B. They have a frequency greater than they themselves emit.
- B. Have a frequency lower than they themselves emit.
- 12. Which rays are deflected by the prism more strongly:
- A. Red. B. Green.
- B. Purple.
- 13. Which rays are deflected more strongly by a diffraction grating:
- A. Red. B. Green.
- B. Purple.
- 14. In what state of aggregation Do spectral analysis laboratories examine any substance to determine its chemical composition?
- A. In solid. B. In liquid.
- B. In gaseous form.
- 15. What spectra are used for spectral analysis:
- A. By continuous. B. By rulers.
- B. For any reason.
- 16. Which chemical element was discovered through spectral analysis?
- A. Neon. B. Helium.
- B. Hydrogen.
- 17. A device for observing the visible part of the spectrum is called...
- A. Spectrograph. B. Spectroscope.
- B. Spectrometer.
- 18. The state of atoms corresponding to all allowed energy levels, except the lowest, is called...
- A. Excited.
- B. Unexcited.
- B. Stationary.
- 19. An electron associated with an atom during a transition from an orbit more distant to a less distant one from the nucleus at the moment of transition...
- A. Emits energy. B. Absorbs energy.
- B. Emits and absorbs energy.
- 20. An electron in a hydrogen atom moved from the first energy level to the third. How did the energy of the atom change?
- A. Decreased. B. Increased.
- B. Has not changed.
- Answers
- 10 – 13 rating “3”
- 14 – 17 score “4”
- 18 – 20 rating “5”
Physical dictation
The role of interfaces as important nodes for storing or exchanging electrical charge is well known in solid-liquid and liquid-liquid systems. However, this is not true for gas-liquid or gas-solid interfaces. Indeed, the effects of excess charge on the surface tension of water, including electrocapillary phenomena for clean water under the air. Many scientific disciplines study water, ice and other liquids in the atmosphere, with more or less emphasis on their electrification, but this is done while a fundamental understanding of droplet charging is still being built.
“Electrification of bodies. Law of conservation of electric charge"
1. What is the name of the branch of physics that studies charged bodies?
2. What interaction exists between charged bodies and particles?
3. What physical quantity determines electromagnetic interaction?
4. Does the magnitude of the charge depend on the choice of reference system?
Liquid air interface: aerosols. The importance of aerosols in atmospheric phenomena is of paramount importance, including large number chemicals released into the atmosphere by natural and anthropogenic phenomena. Water aerosols are particularly important for cloud formation, stability, and rain or snow precipitation, while clouds are also important as precursors to atmospheric aerosols formed by other chemicals. The charge transferred by ions contributes to the formation of aerosol particles, but the fraction of particles mediated by ions is small compared to neutral pathways.
5. Can we say that the charge of a system consists of the charges of the bodies included in this system?
6. What is the name of the process that leads to the appearance of electric charges on bodies?
7. If a body is electrically neutral, does this mean that it contains no electrical charges?
8. Is it true that in a closed system the algebraic sum of the charges of all bodies of the system remains constant?
Many authors in the field associate atmospheric electricity with liquid water or ice particles, and they attribute the origin of atmospheric electricity to a variety of events, such as the ionization of atmospheric gas due to high energy particles reaching earth's atmosphere from space, and the destruction of ice particles. The effects of ionizing radiation are relatively well understood, but the generation of charge associated with rupture solids, is not, although it is often observed.
Recent literature in this area also considers water spray as a source of charged aerosol particles. Lenard examined natural waterfalls and noticed that negative charges were found away from the waterfall while detecting positive nearby spikes. The author explained his results in terms of a double layer of charges at the liquid-gas interface: oriented dipoles on the surface of the bubbles attract positive or negative charges from the volume, depending on the nature of the liquid.
9. If in a closed system the number of charged particles has decreased, does this mean that the charge of the entire system has also decreased?
_____________________________________________________________________________
Physical dictation
“The law of conservation of electric charge. Coulomb's Law."
1. Is it possible to create an electric charge?
2. Do we create an electric charge during electrification?
Either Plateau-Rayleigh instability or mechanical failure breaks water jets or bubbles into the atomizer with a droplet size distribution. In the case of pure water in contact with air, the surface layer carries an excess negative charge, while the balance accumulates in the volume. Other mechanisms will be discussed in Section 5 of this article. One current work confirms that splashing water is a source of nanosized singly charged aqueous atmospheric ions, identified as species water based, and offers interesting proposals for charge separation mechanisms.
3. Can charge exist independently of particles?
4. A body whose total positive charge of particles is equal to the total negative charge of particles is...
5. The strength of the interaction of infected particles with increasing charge of any of these particles?
6. When charges are placed in a medium, the interaction force between them...
7. With an increase in the distance between charges by 3 times, the interaction force...
Another report looking at cluster and intermediate ions near a waterfall found a 100-fold higher concentration of 5-10 nm negative ions near a waterfall compared to 100 m away, while the difference was negligible for large ions. Thus, even though experiments on charge production by splashing have been reported long ago, they still represent big problem for experimenters. The collections were, of course, of considerable magnitude, but, as seems to be the fate of many meteorological experiments, the results were the most contradictory.
8. The quantity characterizing the electrical properties of the medium is called...
9. In what units is electric charge measured?
Physical dictation “Electrification of bodies.
Law of conservation of electric charge. Coulomb's Law."
Capacitors
1. The ability of a conductor to accumulate charge is called...
2. In what units is electrical capacity measured?
3. What is the name of a system of two conductors separated by a dielectric layer?
4. What is meant by capacitor charge?
5. Where is the electric field of the capacitor concentrated?
6. How will the capacitance of the capacitor change if a dielectric is introduced between the plates?
7. Does the capacitance of a capacitor depend on its geometric dimensions?
Not only did the quantities change, but even the polarity. The only reproducible fact was that distilled water was always much more effective ordinary water. The formation of electrified droplets by mechanical disruption of liquids is also known as the "balloelectric effect". Following Nathanson, this can be expected as a consequence of statistical fluctuations in the density of ions in the liquid, and may also play a role in the electrification of clouds.
Many researchers are devoted to laboratory studies of the formation, properties and stability of aerosols, often related to important practical problems in the fields of industry, energy, safety and health. However, aerosol charge in this context is not yet a serious problem, and many publications on aerosols do not even address the charge. This situation is very different from the literature on liquid sols, where zeta potentials or particle charge data are given in almost every paper.
Answers
1. ... electrical capacity
2. In farads
3. Capacitor
4. Charge module of one of the plates
5. Inside, between the covers
6. Increase
7. Yes