This document provides an overview of key concepts in electricity and electrostatics, including:
1. Electric charge is a fundamental property of matter that can be positive or negative and is measured in coulombs. Charging methods include friction, conduction, and induction.
2. Coulomb's law describes the proportional relationship between the electrostatic force between two point charges and the product of their magnitudes over the square of the distance between them.
3. Electric fields are defined as the force exerted on a test charge at a point. Electric flux is the number of field lines passing through a given area. Gauss's law relates electric flux to the enclosed charge.
4. Electric potential is the work required
The "Exploring the Wonders of Electric Fields" PowerPoint presentation is an illuminating journey into the fascinating realm of electric fields—an essential concept in physics and electrical engineering. This engaging presentation is designed to provide a comprehensive understanding of electric fields, catering to audiences with varying levels of expertise.
Post-Fertilization and Formation & Development of Seed and Fruit.pdfJLoknathDora
This is a notes type content for the Maharashtra board 12th std students of subject biology. The content is the 3rd part of the 1st chapter namely "Reproduction in Lower and Higher Plants". For detail understanding the chapter and convenience or either simplicity I've separated out the chapter into three parts.
The 3rd part named as " Post-Fertilization and Formation & Development " which includes necessary items which are utmost for the board exams preparation. In this, the results from the reproduction of plants will be studying. The pictures and content I'd referred from the latest textbook of Maharashtra State board, old textbook, Internet, etc.
Get aware about the nature's depletion by humans and take a step towards the conservation as well as protection of our nature.
#conserve nature, conserve future.
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.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
For more information, visit-www.vavaclasses.com
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.
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.
TESDA TM1 REVIEWER FOR NATIONAL ASSESSMENT WRITTEN AND ORAL QUESTIONS WITH A...
Electricity
1. Certificate Course
on
Techniques of Problem Solving in Physics
Electric charge
• It is a basic property of matter carried by some elementary particles that governs how the
particles are affected by an electric or magnetic field. Electric charge, which can be
positive or negative, occurs in discrete natural units and is neither created nor destroyed.
• Electric charge is a scalar quantity.
• The electric charge is measured using coulomb.
Various properties of charge include the following:
• Additivity of Electric Charge
• Conservation of Electric Charge
• Quantization of Electric Charge
Coulomb’s Law
The magnitude of the electrostatic force of attraction or repulsion between two-point
charges is directly proportional to the product of the magnitudes of charges and inversely
proportional to the square of the distance between them.
F =
1
4π𝜖0
∙
q1 ∙ q2
r2
An uncharged object can be charged in three different ways as follows:
Charging by friction
When two objects are rubbed against each other, charge transfer takes place. One of the
objects loses electrons while the other object gains electrons. The object that loses electrons
becomes positively charged and the object that gains electrons becomes negatively charged. Both
the objects get charged due to friction and this method of charging is commonly known as
electrification by friction.
Charging by conduction
The method of charging an uncharged object by bringing it close to a charged object is
known as charging by conduction. The charged conductor has an unequal number of protons and
electrons, hence when an uncharged conductor is brought near it, it discharges electrons to
stabilise itself.
Charging by Induction
The process of charging an uncharged conductor by bringing it near a charged conductor
without any physical contact is known as charging by induction.
Electric Field
Electric field at a point in the space is measured as the force acting on the unit positive
charge at that point.
E =
1
4πϵ0
∙
q
r2
2. Electric Flux
• The total number of electric field lines passing a given area is defined as the electric flux.
• Line of force is a path followed by an electric charge free to move in an electric field
• Lines of force are lines in any such force field the tangent of which at any point gives the
field direction at that point and the density of which gives the magnitude of the field.
Properties of Electric Field Lines:
• The field lines never intersect each other.
• The field lines are perpendicular to the surface of the charge.
• The magnitude of charge and the number of field lines, both are proportional to each
other.
• The start point of the field lines is at the positive charge and end at the negative charge.
• For the field lines to either start or end at infinity, a single charge must be used.
Gauss Law
It states that the total electric flux out of a closed surface is equal to the charge enclosed divided
by the permittivity.
φ =
q
ε0
φ = ∫E ⋅ n
̂da
𝑆
Electric Potential
• The amount of work needed to move a unit charge from a reference point to a specific
point against an electric field.
V =
W
Q
• Electric potential can be thought of as the potential energy per unit charge. Therefore, the
work done in moving a unit charge from one point to another is equal to the difference in
potential energies at each point.
• Electric potential is expressed in units of joules per coulomb (i.e., volts)
V =
1
4πϵ0
∙
q
r
Equipotential Surface
• A surface which has same electrostatic potential at every point on it, is known as
equipotential surface.
• Equipotential surfaces do not intersect each other as it gives two directions of electric
field at intersecting point which is not possible.
• Equipotential surfaces are closely spaced in the region of strong electric field and vice-
versa.
• Electric field is always normal to equipotential surface at every point of it and directed
from one equipotential surface at higher potential to the equipotential surface at lower
potential.
• Work done in moving a test charge from one point of equipotential surface to other is
zero.
3. Electrostatic Potential Energy The work done against electrostatic force gets stored as potential
energy. This is called electrostatic potential energy
Electric Current
• Current is the rate at which charge flows past a point on a circuit.
• Direct current (DC) is the one directional flow of electric charge.
• Alternating current (AC) is an electric current which periodically reverses direction and changes
its magnitude continuously with time.
• Unit ampere