This document discusses various topics related to electrostatics including frictional electricity, properties of electric charges, Coulomb's law, units of charge, relative permittivity, and continuous charge distribution. It defines frictional electricity as the transfer of electrons from one body to another when two suitable bodies are rubbed together. It also describes Coulomb's law, which states that the electrostatic force between two point charges is directly proportional to the product of the charges and inversely proportional to the square of the distance between them. Finally, it discusses different types of continuous charge distributions including linear, surface, and volume charge densities.
Electric Charge and Electric Field LectureFroyd Wess
More: http://www.pinoybix.org
Lesson Objectives:
Static Electricity; Electric Charge and Its Conservation
Electric Charge in the Atom
Insulators and Conductors
Induced Charge; the Electroscope
Coulomb’s Law
Solving Problems Involving Coulomb’s Law and Vectors
The Electric Field
Field Lines
Electric Fields and Conductors
Gauss’s Law
Electric Forces in Molecular Biology: DNA Structure and Replication
Photocopy Machines and Computer Printers Use Electrostatics
Electric Charge and Electric Field LectureFroyd Wess
More: http://www.pinoybix.org
Lesson Objectives:
Static Electricity; Electric Charge and Its Conservation
Electric Charge in the Atom
Insulators and Conductors
Induced Charge; the Electroscope
Coulomb’s Law
Solving Problems Involving Coulomb’s Law and Vectors
The Electric Field
Field Lines
Electric Fields and Conductors
Gauss’s Law
Electric Forces in Molecular Biology: DNA Structure and Replication
Photocopy Machines and Computer Printers Use Electrostatics
As charges are of two types, positive and negative, there are other certain basic properties they follow. If the size of charged bodies is so small, we consider them as point charges. Copy the link given below and paste it in new browser window to get more information on Basic Properties of Electric Charge www.askiitians.com/iit-jee-electrostatics/basic-properties-of-electric-charge/
This is first PPT in the electrostatics series. This PPT presents idea of charge , its various methods of production like through conduction, friction, induction. It also describes working of electroscope & concept of grounding of an insulator.
Electrostatic potential and capacitanceEdigniteNGO
Hello everyone, we are from Edignite NGO and we have come up with chapters of class 11 and 12 (CBSE).
For any queries, please contact
Lekha Periwal : +916290889619
Heer Mehta : +917984844099
Electrostatics is the branch of physics in which we study the charges at rest. In 1784 a French military engineer Charles Coulomb proposed a law known as Coulomb law.
Describes electrostatic principles and concepts.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
As charges are of two types, positive and negative, there are other certain basic properties they follow. If the size of charged bodies is so small, we consider them as point charges. Copy the link given below and paste it in new browser window to get more information on Basic Properties of Electric Charge www.askiitians.com/iit-jee-electrostatics/basic-properties-of-electric-charge/
This is first PPT in the electrostatics series. This PPT presents idea of charge , its various methods of production like through conduction, friction, induction. It also describes working of electroscope & concept of grounding of an insulator.
Electrostatic potential and capacitanceEdigniteNGO
Hello everyone, we are from Edignite NGO and we have come up with chapters of class 11 and 12 (CBSE).
For any queries, please contact
Lekha Periwal : +916290889619
Heer Mehta : +917984844099
Electrostatics is the branch of physics in which we study the charges at rest. In 1784 a French military engineer Charles Coulomb proposed a law known as Coulomb law.
Describes electrostatic principles and concepts.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
Have you ever experienced a crackling sound or witnessed a spark while removing synthetic clothes or a sweater, especially in dry weather? This phenomenon occurs due to the discharge of electric charges accumulated through the rubbing of insulating surfaces. Another example of electric discharge is lightning observed during thunderstorms. These occurrences result from static electricity generation. NCERT Class 12 Physics Notes Chapter 1 on Electric Charges and Fields delves into these phenomena extensively. Electrostatics is the branch of physics that investigates forces, fields, and potentials arising from static charges.
For more information, visit- www.vavaclasses.com
JEE Main Advanced 12 Sample ebook, which helps you to understand the chapter in easy way also download sample papers and previous year papers and practice to solve the question on time. Download at www.misostudy.com.
JEE Main 12 Sample ebook, which helps you to understand the chapter in easy way also downaload sample papers and previous year papers and practice to solve the question on time. Download at www.misostudy.com.
How to Make a Field invisible in Odoo 17Celine George
It is possible to hide or invisible some fields in odoo. Commonly using “invisible” attribute in the field definition to invisible the fields. This slide will show how to make a field invisible in odoo 17.
Operation “Blue Star” is the only event in the history of Independent India where the state went into war with its own people. Even after about 40 years it is not clear if it was culmination of states anger over people of the region, a political game of power or start of dictatorial chapter in the democratic setup.
The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
We all have good and bad thoughts from time to time and situation to situation. We are bombarded daily with spiraling thoughts(both negative and positive) creating all-consuming feel , making us difficult to manage with associated suffering. Good thoughts are like our Mob Signal (Positive thought) amidst noise(negative thought) in the atmosphere. Negative thoughts like noise outweigh positive thoughts. These thoughts often create unwanted confusion, trouble, stress and frustration in our mind as well as chaos in our physical world. Negative thoughts are also known as “distorted thinking”.
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
This is a presentation by Dada Robert in a Your Skill Boost masterclass organised by the Excellence Foundation for South Sudan (EFSS) on Saturday, the 25th and Sunday, the 26th of May 2024.
He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
Model Attribute Check Company Auto PropertyCeline George
In Odoo, the multi-company feature allows you to manage multiple companies within a single Odoo database instance. Each company can have its own configurations while still sharing common resources such as products, customers, and suppliers.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Unit 8 - Information and Communication Technology (Paper I).pdf
Electrostatics 1
1.
2. Frictional Electricity: Frictional electricity is the electricity produced by rubbing two suitable bodies and transfer of electrons from one body to other. + + + + + + + + + + + + - - - - - - - - - - + + + + + + + + + + Glass Silk Ebonite Flannel Electrons in glass are loosely bound in it than the electrons in silk. So, when glass and silk are rubbed together, the comparatively loosely bound electrons from glass get transferred to silk. As a result, glass becomes positively charged and silk becomes negatively charged. Electrons in fur are loosely bound in it than the electrons in ebonite. So, when ebonite and fur are rubbed together, the comparatively loosely bound electrons from fur get transferred to ebonite. As a result, ebonite becomes negatively charged and fur becomes positively charged. .
3. It is very important to note that the electrification of the body (whether positive or negative) is due to transfer of electrons from one body to another. i.e. If the electrons are transferred from a body, then the deficiency of electrons makes the body positive. If the electrons are gained by a body, then the excess of electrons makes the body negative. If the two bodies from the following list are rubbed, then the body appearing early in the list is positively charges whereas the latter is negatively charged. Fur, Glass, Silk, Human body, Cotton, Wood, Sealing wax, Amber, Resin, Sulphur, Rubber, Ebonite. Comb Dry hair Polythene Ebonite Amber, Ebonite, Rubber, Plastic Wool, Flannel Silk Glass Column II (-ve Charge) Column I (+ve Charge)
4.
5. Note: Recently, the existence of quarks of charge ⅓ e and ⅔ e has been postulated. If the quarks are detected in any experiment with concrete practical evidence, then the minimum value of ‘quantum of charge’ will be either ⅓ e or ⅔ e. However, the law of quantization will hold good. Coulomb’s Law – Force between two point electric charges: The electrostatic force of interaction (attraction or repulsion) between two point electric charges is directly proportional to the product of the charges, inversely proportional to the square of the distance between them and acts along the line joining the two charges. Strictly speaking, Coulomb’s law applies to stationary point charges. F α q 1 q 2 F α 1 / r 2 or or where k is a positive constant of proportionality called electrostatic force constant or Coulomb constant. where ε 0 is the permittivity of free space r q 1 q 2 F α q 1 q 2 r 2 F = k q 1 q 2 r 2 In vacuum, k = 1 4 π ε 0
6. where ε is the absolute electric permittivity of the dielectric medium The dielectric constant or relative permittivity or specific inductive capacity or dielectric coefficient is given by In vacuum, ε 0 = 8.8542 x 10 -12 C 2 N -1 m -2 or In medium, k = 1 4 π ε F = q 1 q 2 r 2 1 4 π ε 0 F = q 1 q 2 r 2 1 4 π ε 0 ε r In medium, = 8.9875 x 10 9 N m 2 C -2 1 4 π ε 0 = 9 x 10 9 N m 2 C -2 1 4 π ε 0 K = ε r = ε ε 0
7. Coulomb’s Law in Vector Form: q 1 q 2 > 0 q 1 q 2 < 0 In vacuum, for q 1 q 2 > 0 , In vacuum, for q 1 q 2 < 0 , & (in all the cases) q 1 q 2 > 0 r + q 1 + q 2 F 21 F 12 r 12 r + q 1 - q 2 F 21 F 12 r 12 q 1 q 2 r 2 1 4 π ε 0 r 21 F 12 = q 1 q 2 r 2 1 4 π ε 0 r 12 F 21 = q 1 q 2 r 2 1 4 π ε 0 r 12 F 12 = q 1 q 2 r 2 1 4 π ε 0 r 21 F 21 = F 12 = - F 21 r - q 1 - q 2 F 21 F 12 r 12
8. & Note: The cube term of the distance is simply because of vector form. Otherwise the law is ‘Inverse Square Law’ only. Units of Charge: In SI system, the unit of charge is coulomb (C). One coulomb of charge is that charge which when placed at rest in vacuum at a distance of one metre from an equal and similar stationary charge repels it and is repelled by it with a force of 9 x 10 9 newton . In cgs electrostatic system, the unit of charge is ‘statcoulomb’ or ‘esu of charge’. In cgs electrostatic system, k = 1 / K where K is ‘dielectric constant’. For vacuum, K = 1. If q 1 = q 2 = q (say), r = 1 cm and F = 1 dyne, then q = ± 1 statcoulomb. In cgs electromagnetic system, the unit of charge is ‘abcoulomb’ or ‘emu of charge’. q 1 q 2 r 3 1 4 π ε 0 r 12 F 12 = q 1 q 2 r 3 1 4 π ε 0 r 21 F 21 = F = q 1 q 2 r 2
9. 1 emu of charge = c esu of charge 1 emu of charge = 3 x 10 10 esu of charge 1 coulomb of charge = 3 x 10 9 statcoulomb 1 abcoulomb = 10 coulomb Relative Permittivity or Dielectric Constant or Specific Inductive Capacity or Dielectric Coefficient: The dielectric constant or relative permittivity or specific inductive capacity or dielectric coefficient is given by the ratio of the absolute permittivity of the medium to the permittivity of free space. The dielectric constant or relative permittivity or specific inductive capacity or dielectric coefficient can also be defined as the ratio of the electrostatic force between two charges separated by a certain distance in vacuum to the electrostatic force between the same two charges separated by the same distance in that medium. Dielectric constant has no unit. K = ε r = ε ε 0 K = ε r = F v F m
10. Continuous Charge Distribution: Any charge which covers a space with dimensions much less than its distance away from an observation point can be considered a point charge. A system of closely spaced charges is said to form a continuous charge distribution. It is useful to consider the density of a charge distribution as we do for density of solid, liquid, gas, etc. (i) Line or Linear Charge Density ( λ ) : If the charge is distributed over a straight line or over the circumference of a circle or over the edge of a cuboid, etc, then the distribution is called ‘linear charge distribution’. Linear charge density is the charge per unit length. Its SI unit is C / m. or + + + + + + + + + + + + dq d l Total charge on line l , q λ = l λ = dq d l q = ∫ λ d l l
11. (ii) Surface Charge Density ( σ ) : or If the charge is distributed over a surface area, then the distribution is called ‘surface charge distribution’. Surface charge density is the charge per unit area. Its SI unit is C / m 2 . + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + dq dS Total charge on surface S, (iii) Volume Charge Density ( ρ ) : or If the charge is distributed over a volume, then the distribution is called ‘volume charge distribution’. Volume charge density is the charge per unit volume. Its SI unit is C / m 3 . Total charge on volume ז , END σ = q S σ = dq dS q = ∫ σ dS S ρ = q ז ρ = dq d ז q = ∫ ρ d ז ז dq d ז