This document discusses key concepts in electrostatics including:
1) Atoms have a positively charged nucleus surrounded by negatively charged electrons. Charges can be transferred between objects by the addition of energy.
2) Like charges repel and opposite charges attract according to Coulomb's Law. Electric charge is conserved and never created or destroyed.
3) Conductors allow charge to move easily while insulators do not, due to loosely or tightly bound electrons. Charging objects can occur through conduction or induction.
4) Electric fields are created by charges and their strength is indicated by field lines. Electric potential difference is the change in potential energy per unit charge. Capacitors store charge between conducting plates
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
Learning Objectives
Define electric charge, and describe how the two types of charge interact.
Desribe three common situations that generate static electricity. State the law of conservation of charge.
Describe three methods for charging an object.
State Coulomb’s law
Describe an electric field diagram of a positive point charge; of a negative point charge with twice the magnitude of positive charge
Draw the electric field lines between two points of the same charge; between two points of opposite charge.
Thank you So much
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
Learning Objectives
Define electric charge, and describe how the two types of charge interact.
Desribe three common situations that generate static electricity. State the law of conservation of charge.
Describe three methods for charging an object.
State Coulomb’s law
Describe an electric field diagram of a positive point charge; of a negative point charge with twice the magnitude of positive charge
Draw the electric field lines between two points of the same charge; between two points of opposite charge.
Thank you So much
Key terms relates to Electrostatic . Class XII (12) Phyiscs for IIT-JEE, NEET, Engineering , Medical , 11th, 12th and I. Sc. Student Easy to understand and use for own development.
In 600 B.C., Thales of Miletus, one of the founders of Greek science, first noticed that if a piece of amber is rubbed with a woolen cloth, it then acquires the property of attracting light feathers, dust, lint, pieces of leaves, etc.
In 1600 A.D., William Gilbert, the personal doctor to Queen Elizabeth- I of England, made a systematic study of the substance that behaves like amber. In his book De Magnete (on the magnet), he introduces the name electrica for such a substance. In fact, the Greek name for amber is an electron, which is the origin of all such words: electricity, electric force, electric charge, and electron. Fractional electricity:- If a glass rod is rubbed with a silk cloth or a fountain pen with a coat- sleeve, it is able to attract small pieces of paper, straw, lint, light feathers, etc. Similarly, a plastic comb passed through dry hair can attract such light objects. In all these examples, we can say that the rubbed substance has become electrified or electrically charged. It is because of friction that the substance gets charged on rubbing.
The property of rubbed substances due to which they attract the light object is called electricity. The electricity developed by rubbing or friction is called frictional or static electricity. The rubbed substance which shows this property of attraction is said to have become electrified or electrically charged.
https://bdslearningapp.blogspot.com/2020/08/electric-charges-and-fields.html
A geometrical model of the electron is illustrated. Pair production and annihilation processes is described. Origin of electric charge and the the fine structure constant reviewed. Quantum mechanical description of electric and magnetic field lines at the Planck scale is depicted
Key terms relates to Electrostatic . Class XII (12) Phyiscs for IIT-JEE, NEET, Engineering , Medical , 11th, 12th and I. Sc. Student Easy to understand and use for own development.
In 600 B.C., Thales of Miletus, one of the founders of Greek science, first noticed that if a piece of amber is rubbed with a woolen cloth, it then acquires the property of attracting light feathers, dust, lint, pieces of leaves, etc.
In 1600 A.D., William Gilbert, the personal doctor to Queen Elizabeth- I of England, made a systematic study of the substance that behaves like amber. In his book De Magnete (on the magnet), he introduces the name electrica for such a substance. In fact, the Greek name for amber is an electron, which is the origin of all such words: electricity, electric force, electric charge, and electron. Fractional electricity:- If a glass rod is rubbed with a silk cloth or a fountain pen with a coat- sleeve, it is able to attract small pieces of paper, straw, lint, light feathers, etc. Similarly, a plastic comb passed through dry hair can attract such light objects. In all these examples, we can say that the rubbed substance has become electrified or electrically charged. It is because of friction that the substance gets charged on rubbing.
The property of rubbed substances due to which they attract the light object is called electricity. The electricity developed by rubbing or friction is called frictional or static electricity. The rubbed substance which shows this property of attraction is said to have become electrified or electrically charged.
https://bdslearningapp.blogspot.com/2020/08/electric-charges-and-fields.html
A geometrical model of the electron is illustrated. Pair production and annihilation processes is described. Origin of electric charge and the the fine structure constant reviewed. Quantum mechanical description of electric and magnetic field lines at the Planck scale is depicted
This presentation explains Electrostatic Fields and covers following topics:
-Electrostatic Field
-Coulomb's Law
-Electric Field Intensity
-Electric Flux Density
-Gauss's Law
-Electric Potential
-Electric Dipole
-Electric Flux
-Equipotential Surfaces
This presentation is as per the course of DAE Electronics ELECT-212.
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Unveiling the Secrets How Does Generative AI Work.pdfSam H
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2. Electrostatics
Study of electrical charges that can be collected
and held in one place
3. Electrical Basics
All atoms have a positively charged
nucleus (made up of protons (+) and
neutrons (0) that are surrounded by
electrons (-))
When the positive charge equals the
negative charge the atom is neutral
Electrons can be removed or transferred
by the addition of energy.
4. Conservation of Charge
Electric charge is never created or
destroyed, just transferred by the
separation of positive and negative charge
Like charges repel
Opposite charges attract
A neutral object will be attracted to a
charged object
5. Electrical Materials
Conductors – materials through which
charges will move about easily because
they have loosely bound electrons; Ex:
most metals
Insulators - materials through which
charges will not move about easily
because they have tightly bound
electrons; Ex: glass, wood, plastic
6. Charging a neutral object
Conduction – charging a neutral object by
touching it with a charged object
Induction – charging a neutral object
without touching it, but by the separation
of charges
7. Coulomb’s Law
The electrical force between 2 charged objects
varies directly with the product of the charges
and inversely with the square of the distance
between them
F = kqq’ k = 9EE9 Nm2/C2
d2
A repulsive force is positive because both
charges are alike
An attractive force is negative because the
charges are opposites
9. Electric Fields
A charge creates an electric field in all
directions
The electric field intensity is the force per
unit charge
E = F/q units are N/C
10. Electric Field Lines
Provide a model for
the electric field. The
strength of the field is
indicated by the
spacing between
lines. The closer the
lines the stronger the
field. The field always
points away from the
positive towards the
negative charge.
11. Electric Potential Difference
Change in Potential Energy per unit
charge; this is often called voltage
difference
ΔV = ΔPE/q or ΔV = Work/q
units are J/C = volts
Also ΔV = Ed
12. Grounding
Eliminating the
excess charge by
touching a charged
object to the earth
(low voltage). The
charge moves from
higher potential to
lower potential until
they are equal.
13. All charged objects
are on the surface of
a solid conductor
Excess charge will
move to the outer
surface of a hollow
conductor
14. Capacitor
Stores charge; made up
of two oppositely charged
conducting plates
separated by an insulator
Capacitance – ratio of
charge stored to potential
difference
C = q/V
units are C/V = 1 Farad (F)
15. Millikan Experiment
He determined the
charge of an electron
to be 1.6 EE -19 C
Eq = mg