Chapter 5: Electricity and Magnetism. Electricity and Magnetism.

Slides:

Advertisements

Similar presentations

Notes on Chapter 32 Electrostatics

Advertisements

Static Electricity PSE Chapter 15 pg. 197 Textbook Chapter 32.

What is an electric charge?  Describe the structure & charges in an atom.  Charge- physical property  Charged objects exert a force- push or pull-

Chapter 20/21/22 Electricity  Electric Charge –Protons have positive electric charge –electrons have negative electric charge.  Atoms get charged by.

Electrostatics. Electrostatics is the study of electrical charges at rest; i.e., charged objects that are stationary or in a fixed position.

 What do you think the term Electric Charge means?

Static Electricity. Electric Charge General Properties –Electrons carry negative charge and exist outside of the nucleus –Protons carry positive charge.

Electricity & Magnetism Chapter 1 - Electricity 8 th Grade.

Question of the Day Rules  You must work alone  You may use your textbook today  You have 6 minutes to complete the QOD Good luck!!

Chapter 21 Electricity. Opposite charges attract, like repel Charged objects can cause electrons to rearrange their positions on a neutral object.

10.1 Exploring the Nature of Static Electricity

Electrostatics. Electricity Comes from Greek word elektron which means “amber” because it was noticed that when amber was rubbed with cloth it attracts.

ELECTRICITY. TYPES OF ELECTRICITY Electricity is the study of how charges interact. In general, electricity refers to electric charge. There are two types.

Charges Static electricity

Electricity Chapter 10. Recall this info… All matter is made of atoms which are the smallest particle of an element that has all the properties of that.

Electrostatics. Electricity Electrostatics Electric Force (Coulomb’s law) Electric Fields Electric Potential (Voltage) Electrical circuits Ohm’s Law Resistivity.

Electricity Chapter 13.

Electric Forces. Atoms Atoms have the following: – Neutrons (neutral charge) – Protons (positive charge) – Electrons (negative charge) Protons and electrons.

Chapter 32 Electrostatics.

Electric Charge – Chapter 16 Section 1 Where do you see electricity around you? What is an Electric Charge? How does something become electrically charged?

 Two types of electric charges  Proton: positive charge  Electron: negative charge  Positive charge of proton = negative charge of electron.

Chapter 20, Section 1 Electric Charge and Static Electricity Wednesday, January 6, 2010 Pages

Electricity and Magnetism Chapter 7 Overview. Electricity Charge of proton Positive Charge of proton Positive Charge of electron Negative Charge of electron.

Atoms and Charge Transfer

abcdefghijklmnopqrstuvwxyz Electrons (e - )are negatively charged particles of an atom. Protons are positively charged particles of an atom. Atoms usually.

Static Electricity. Static electricity is a build-up of electric charge that does not move (it stays in place). Static means stationary or still.

Electricity Section 1: Electric Charge and Static Electricity.

Ch Electricity I. Electric Charge  Atoms and Charge  Conductors  Insulators  Static Electricity  Electric Discharge.

Static Electricity. What is Static Electricity? Static electricity is the build up of electrons on the surface of objects. This charge will stay on the.

Mechanisms for Transfer of Charge Restless Electrons.

Electric Charge and Static Electricity. Electric Charge  All matter is made up of atoms  Atoms contain 1. Protons (+) 2. Neutrons (0) 3. Electrons (-)

PSC 4011 Electricity: What’s the connection?. PSC 4011: Static Electricity & Magnetism  Electricity describes all of the phenomena caused by positive.

Electricity Chapter 17 Section 1 (pages ).

Unit 13.1 Electrostatics is the study of non-moving electric charges, sometimes called static electricity.

Electrostatics ELECTROSTATICS. History J.J. Thomson – discovered negatively charged particles which he called electrons Ernest Rutherford – discovered.

Electrostatics. Electrostatics is the study of electrical charges at rest; i.e., charged objects that are stationary or in a fixed position.

Electrostatics Electrostatics deals with electric charges at rest, or static electricity.

Ch. 5: Electricity and Magnetism. Electricity All matter is made up of atoms. Within each atom are positive and negative charges. A proton carries a positive.

ELECTRICITY. ATOMIC STRUCTURE All matter is made of atoms Atoms are made of protons, neutrons and electrons protons neutrons electrons.

 Effect static electricity charging  Protons (p + ) › in nucleus (center) of an atom › positively charged  Neutrons (n 0 ) › in nucleus (center) of.

Static Electricity. Electricity Electricity is the set of physical phenomena associated with the presence and flow of electric charge. Electricity gives.

Electricity 7-1, 7-2 Electric Charge and Electric Current.

Electric Charge & Static Electricity. Electric Charge The electric charge of an object is determined by the atoms that make up the object. a Physical.

Static Electricity Instructor: Shelia Chase. Static Electricity Build up (accumulation) of charges on an object. Opposite charges attract; like charges.

Electricity & Magnetism Chapter 7 Section 1 Electric Charge.

Topic: Electric Charge and Static Electricity PSSA: C / S8.C.2.1.

What is an electric charge? An electric charge is the electrical property of matter that creates a force between objects. the attracting or repelling behavior.

Introduction to Electricity. I. Electric Charge and Static Electricity A. Electric ChargeA. Electric Charge –1. What it is a. matter is made up of atoms.

7-1 Electric Charge You will be learning: 1.To describe how electric charges exert forces on each other. 2.How to compare the strengths of electric and.

Physics Section 16.1 Apply Properties of Electrostatic Charge Static Electricity consists of stationary electric charges. A device that detects an electric.

Every home has an electricity meter. Do you know where yours is?

Electrostatics.

Electricity objectives.

Static and Dynamic Magnetism

Electricity Chapter 17.1.

Static Electricity!.

Electric Charge and Static Electricity

Charges Static electricity

Science 9 Static Electricity Static Electricity

Intro to Electricity.

ELECTRIC CHARGE.

ELECTRICITY: Electric Charge

Electricity and Magnetism

Electric Charge and Static Electricity

Electricity Electric Charge.

Ch Electricity I. Electric Charge (p ) Static Electricity

Presentation transcript:

Chapter 5: Electricity and Magnetism

Electricity and Magnetism

What is Electricity? Electricity describes all the phenomena caused by positive and negative charges. Negatively charged bodies contain more electrons than protons. Positive charged bodies contain more protons than electrons.

What is Electricity? The charge of one electron or proton has a value of: 1.602x C (C: Coulomb)

What is Electricity? 1 C = 6.25x10 18 electrons or protons

What is Electricity? Equal charges: repel each other Opposite charges: attract each other

Conductors and Insulators Since most objects are electrically neutral, charging an object consists in creating an imbalance in the electrical charge of that object. Materials can be divided in three groups, according to their reaction to the process of “charging”:  Conductors  Semiconductors  Insulators

Conductors and Insulators Conductors : permit the free flow of electrical charges.  Usually metals (weak attraction of valence electrons on the part of the atomic nucleus).  When charged, its electrons move in one general direction, pushing one another and making the charge move along the circuit.  Electrolytic solutions are also conductors (ions).

Conductors and Insulators Insulators: impede the free flow of electrical charges.  Usually non-metals (strong attraction of valence electrons on the part of the atomic nucleus).  When charged, its electrons are strongly held by the atomic nuclei, so charges do not move.  Wood, glass, plastic, ceramics, paper, rubber, silk and air are also insulators.

Static Electricity Describes all the phenomena related to electrical charges at rest. Metal-leaf electroscope: apparatus used to detect static electricity in an object (see Fig 5.11 on page 145 Textbook)

Static Electricity Charging by friction:  Two neutral bodies rubbed against each other.  Some electrons are pulled from one of them.  Resulting: two opposite charged bodies (attraction!)  See table 5.14 (page 146) for Triboelectric series when charged by friction.

Static Electricity Charging by conduction:  Two solid bodies in contact with each other.  The charge is transferred from the charged object to the second object.  Resulting: two equally charged bodies, each with less charge than initially

Static Electricity Charging by induction:  One charged body (A) approaches a neutral one (B).  If B is a conductor: accumulation of equal amount of charges of opposite sign to those of A in the region of B closest to A. B remains after A is withdrawn.  If B is an insulator: accumulation of equal amount of charges of opposite sign to those of A in the region of B closest to A. B will discharge as soon as A is withdrawn.