# Electric charges. Basics of Electricity

Size: px
Start display at page:

Transcription

1 Electric charges Basics of Electricity

2 Electron has a negative charge Neutron has a no charge Proton has a positive charge But what is a charge?

3 Electric charge, like mass, is a fundamental property of matter. Inside atoms found in matter, attraction between positive and negative charges holds the atoms together.

4 Virtually all the matter around you has electric charge because atoms are made of electrons and protons (and neutrons). But... ordinary matter has zero net (total) charge, most matter acts as if there is no electric charge at all.

5

6 Greater affinity for e - : stick to electrons more and tend to gain electrons becoming negative Less affinity for e - : don t hold electrons as tight and are more likely to lose electrons and become positive

7 Charging by Friction A wool cloth does not have much affinity for electrons. Becomes Positive PVC becomes negative

8 (Hold electrons tightly) Most likely to gain electrons and become negative (Hold electrons loosely) Most likely to lose electrons and become positive) PVC Rubber Cotton Paper Silk Fur Wool Nylon Hair Acetate Glass

9 Material through which electrons move freely Examples (gold, silver, copper, and aluminum) The general rule is that good thermo conductors are good electric conductors

10 Metals tend to share electrons in electron clouds electrons are free to move around making them better conductors.

11 Electrical Insulator Electrical Conductor

12 Material through which electrons do not freely move Examples: rubber, paper, plastic, air

13 Removing a static charge by producing a path to the ground Electrons move from a negatively charged objects to the ground until the object is neutral Electrons move from ground to neutralize positively charged objects The earth both accepts and gives electrons while remaining overall neutral Grounding wand for Van De Graaff generator

14 Section 2: Charging Objects Three Ways of putting a charge on an object 1. Friction 2. Induction 3. Conduction

15 1. Charging by Friction Charging by rubbing objects that have different affinities for electrons together

16 Induction (charging without contact) 1. Bring a charged object (rod) close to a neutral one (ball) without contact 2. The electrons in the ball will be repelled leaving a positive side The now positive sided ball with be attracted to the negative rod

17 Induction (charging without contact) Induction is only a temporary change without contact therefore electrons are not transferred The charge induced is opposite Take away the rod and a neutral charge will return

18 Conduction (charging with contact) Conduction is a more permanent change with contact; electrons are transferred and then isolated. Charge conducted is the same After conduction the ball and rod will repel each other

19 The unit of charge is the coulomb (C). The name was chosen in honor of Charles Augustin de Coulomb ( ), the French physicist who performed the first accurate measurements of the force between charges.

20 Electric forces are incredibly strong. A millimeter cube of carbon the size of a pencil point contains about 77 coulombs of positive and negative charge.

21 3 factors affecting the magnitude of the force between two charged objects: 1. Charge on the objects 2. Distance between objects 3. Material separating objects

22 When using this equation: A positive force (F) signifies repulsion Both charges (Qs) must be positive or both negative A negative force (F) signifies attraction One charge (Q 1 or Q 2 ) must be positive and the other negative

23 el Coulomb s Law is similar to Newton s Law of Gravity Similarities: They both are used to calculate a field force Both forces have an inverse square relationship to distance They are both related by a constant Differences: Force of gravity is always attractive Electrostatic force can be either attractive or repulsive Gravities constant is very small since gravity is a very weak force F g relates force created by a masses, F el relates force created by charges

24 el Both electric and gravitational forces are field forces because objects do not have to touch to be subjected to the force. Field forces are sometimes called forces at a distance. Magnetic forces work similarly.

25 Electrical Fields Electrical Field (E): an area of electrical influence around a charged object. Variable E Unit: newton per coulomb (N/C)

26 Arrows point away from the positive and toward the negative In the direction a positive charge would travel in the field Spacing of lines show field strength

27

28 Two formula s: E: electrical field (N/C) F: force (N) Q: charge (C) k: constant (For air, k = 9.0 x 10 9 N m 2 /C 2 ) d: distance (m)

29 All charge lies on the surface of a conductor Electrical field inside a conductor is zero E = 0 inside conductor

30

31 The metal outside the car gives the car a path to the ground

32 Here is more proof of shielding

33 Discharge occurs when the electric field around a conductor becomes so strong. The air is ionized helping the charge make a break for the ground.

34 Arc- a rapid discharge producing heat, light, and sound.

35

36 Electrical forces Lightning is caused by a giant buildup of static charge. The cloud, air, and ground can act like a giant circuit. All the accumulated negative charges flow from the cloud to the ground, heating the air along the path (to as much as 20,000 C) so that it glows like a bright streak of light.

37 Charges are separated in storm clouds; + top and bottom Ground under the cloud becomes positively charged by induction V = millions of volts; causes arc discharge with tremendous energy.

38 Electric current is caused by moving electric charge. Electric current comes from the motion of electrons. current

39 A capacitor is a storage device for electric charge. Capacitors can be connected in series or parallel in circuits, just like resistors.

40 A capacitor can be charged by connecting it to a battery or any other source of current. A capacitor can be discharged by connecting it to any closed circuit that allows current to flow.

41 Continue on for intro to electricity and circuits.

42 Electric current is similar in some ways to a current of water. Like electric current, water current can carry energy and do work. A waterwheel turns when a current of water exerts a force on it.

43 An electric circuit is a complete path through which electric current travels. A good example of a circuit is the one found in an electric toaster.

44 Wires in electric circuits are similar in some ways to pipes and hoses that carry water.

45 When drawing a circuit diagram, symbols are used to represent each part of the circuit.

46 Electrical symbols are quicker and easier to draw than realistic pictures of the components.

47 A resistor is an electrical device that uses the energy carried by electric current in a specific way. Any electrical device that uses energy can be shown with a resistor symbol.

48 Inside a Light Bulb

49

50 Current only flows when there is a complete and unbroken path, or a closed circuit. Flipping a switch to the off position creates an open circuit by making a break in the wire.

51

52

53 Electric current is measured in units called amperes, or amps (A) for short. One amp is a flow of a certain quantity of electricity in one second. The amount of electric current entering a circuit always equals the amount exiting the circuit.

54 How can you tell there is water flowing in this picture?

55 You can see currents on the surface of the water showing in which direction the water is moving. The flow of electricity is called current and is measured in amperes or amps for short.

56 Electricity is the flow of electrons through a wire, like water flows in a river. Water flows in currents in a river, the flow of electricity is called current The flow of electricity is measured in amperes or amps for short

57 Voltage is a measure of electric potential energy, just like height is a measure of gravitational potential energy. Voltage is measured in volts (V). A voltage difference of 1 volt means 1 amp of current does 1 joule of work in 1 second.

58 9 volt transistor battery on the tongue hurts. 1.5 volt flashlight battery 120 volt household outlet can be very painful and deadly!

59 A difference in voltage provides the energy that causes current to flow.

60 A useful meter is a multimeter, which can measure voltage or current, and sometimes resistance. To measure voltage, the meter s probes are touched to two places in a circuit or across a battery.

61 Measuring battery voltage Voltage can be considered a measure of electrical pressure Measuring tire pressure Measuring household water pressure

62 A battery uses stored chemical energy to create the voltage difference. Three 1.5-volt batteries can be stacked to make a total voltage of 4.5 volts in a flashlight.

63 A pump is like a battery because it brings water from a position of low energy to high energy.

64 Water meter measuring water flow If you want to measure current you must force the current to pass through the meter. Multimeters can measure two types of current: alternating current (AC) and direct current (DC).

65 Circuit breakers and fuses are two kinds of devices that protect circuits from too much current by making a break that stops the current.

66 Resistance is the measure of how strongly an object resists current flowing through it. The relationship between electric current and resistance can be compared with water flowing from the open end of a bottle.

67 The total amount of resistance in a circuit determines the amount of current in the circuit for a given voltage.

68 Electrical resistance is measured in units called ohms. This unit is abbreviated with the Greek letter omega (Ω).

69 The current in a circuit depends on voltage and resistance. Ohm s law relates current, voltage, and resistance with one formula.

70 If you know two of the three quantities, you can use Ohm s law to find the third.

71 A toaster oven has a resistance of 12 ohms and is plugged into a 120-volt outlet. How much current does it draw?

72 1. Looking for: current in amps 2. Given R = 12 ; V = 120 V 3. Relationships: I = V R 4. Solution I = 120 V = 10 A 12

73 Every electrical device is designed with a resistor that causes the right amount of current to flow when the device is connected to voltage. A

74 The resistance of many electrical devices varies with temperature and current. A light bulb s resistance increases when there is more current because the bulb gets hotter when more current passes through it.

### Electric Charges & Current. Chapter 12. Types of electric charge

Electric Charges & Current Chapter 12 Types of electric charge Protons w/ + charge stuck in the nucleus Electrons w/ - charge freely moving around the nucleus in orbits 1 Conductors Allow the easy flow

### Electricity and Electromagnetism SOL review Scan for a brief video. A. Law of electric charges.

A. Law of electric charges. Electricity and Electromagnetism SOL review Scan for a brief video The law of electric charges states that like charges repel and opposite charges attract. Because protons and

### ELECTRICITY. Chapter ELECTRIC CHARGE & FORCE

ELECTRICITY Chapter 17 17.1 ELECTRIC CHARGE & FORCE Essential Questions: What are the different kinds of electric charge? How do materials become charged when rubbed together? What force is responsible

### Electricity MR. BANKS 8 TH GRADE SCIENCE

Electricity MR. BANKS 8 TH GRADE SCIENCE Electric charges Atoms and molecules can have electrical charges. These are caused by electrons and protons. Electrons are negatively charged. Protons are positively

### Electricity. Year 10 Science

Electricity Year 10 Science What is electricity? The collection or flow of electrons in the form of an electric charge What is static electricity? A stationary electrical charge that is built up on the

Forces Read Chapter 7; pages: 191-221 Objectives: - Describe how electrical charges exert forces on each other; Compare the strengths of electric and gravitational forces; Distinguish between conductors

### Electron Theory of Charge. Electricity. 1. Matter is made of atoms. Refers to the generation of or the possession of electric charge.

Electricity Refers to the generation of or the possession of electric charge. There are two kinds of electricity: 1. Static Electricity the electric charges are "still" or static 2. Current Electricity

### 9. Which of the following is the correct relationship among power, current, and voltage?. a. P = I/V c. P = I x V b. V = P x I d.

Name: Electricity and Magnetism Test Multiple Choice Identify the choice that best completes the statement. 1. Resistance is measured in a unit called the. a. ohm c. ampere b. coulomb d. volt 2. The statement

### Electroscope Used to are transferred to the and Foil becomes and

Electricity Notes Chapter 17 Section 1: Electric Charge and Forces Electric charge is a variety of independent all with one single name. Electricity is related to, and both (-) and (+) carry a charge.

### PSC1341 Chapter 5 Electricity and Magnetism

PSC1341 Chapter 5 Electricity and Magnetism Chapter 5: Electricity and Magnetism A. The Atom B. Electricity C. Static Electricity D. A circuit E. Current and Voltage F. Resistance G. Ohm s Law H. Power

### Name: Class: Date: 1. Friction can result in the transfer of protons from one object to another as the objects rub against each other.

Class: Date: Physics Test Review Modified True/False Indicate whether the statement is true or false. If false, change the identified word or phrase to make the statement true. 1. Friction can result in

### Unit 3 BLM Answers UNIT 3 BLM 3-46

UNIT 3 BLM 3-46 Unit 3 BLM Answers BLM 3-3, Charge Transfer Diagrams 1. Positively charged objects should have more (+) than ( ). Negatively charged objects should have more ( ) than (+). 2. They must

### Section 1 Electric Charge and Force

CHAPTER OUTLINE Section 1 Electric Charge and Force Key Idea questions > What are the different kinds of electric charge? > How do materials become charged when rubbed together? > What force is responsible

### What is electricity? Charges that could be either positive or negative and that they could be transferred from one object to another.

Electricity What is electricity? Charges that could be either positive or negative and that they could be transferred from one object to another. What is electrical charge Protons carry positive charges

### Electric Charge. Labs, Activities & Demonstrations: Notes: Unit: Electricity & Magnetism NGSS Standards: N/A

Add Important Electric Charge Page: 44 NGSS Standards: N/A Electric Charge MA Curriculum Frameworks (006): 5.1, 5.4 AP Physics 1 Learning Objectives: 1.B.1.1, 1.B.1., 1.B..1, 1.B.3.1 Knowledge/Understanding

### Electrical Forces arise from particles in atoms.

Electrostatics Electrical Forces arise from particles in atoms. The protons(+) in the nucleus attract the electrons and hold them in orbit Electrons(-)repel other electrons and protons repel other protons

### STUDY GUIDE CHAPTER 5 ELECTRICITY AND MAGNETISM 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE

Name Date STUDY GUIDE CHAPTER 5 ELECTRICITY AND MAGNETISM 1) ASSOCIATE ELEMENTARY PARTICLES WITH THEIR ELECTRICAL CHARGE Scientists now know that an atom is composed of even smaller particles of matter:

### Static Electricity. Electric Field. the net accumulation of electric charges on an object

Static Electricity the net accumulation of electric charges on an object Electric Field force exerted by an e - on anything that has an electric charge opposite charges attract like charges repel Static

### CHARGE AND ELECTRIC CURRENT:

ELECTRICITY: CHARGE AND ELECTRIC CURRENT ELECTRIC CHARGE ELECTRIC CURRENT ELECTRIC CIRCUIT DEFINITION AND COMPONENTS EFFECTS OF ELECTRIC CURRENT TYPES OF CIRCUITS ELECTRIC QUANTITIES VOLTAGE CURRENT RESISTANCE

### Chapter 3 Static and Current Electricity

Chapter 3 Static and Current Electricity 3.1 Static Electricity - the build up of an electronic charge on a body (object) Electroscope - a device for detecting (not measuring) static charge attraction/repulsion

### Chapter 19, Electricity Physical Science, McDougal-Littell, 2008

SECTION 1 (PP. 633-641): MATERIALS CAN BECOME ELECTRICALLY CHARGED. Georgia Standards: S8P2c Compare and contrast the different forms of energy (heat, light, electricity, mechanical motion, sound) and

### Electric Force and Charges. Conceptual Physics 11 th Edition. Electric Force and Charges

Conceptual Physics 11 th Edition Central rule of electricity Opposite charges attract one another; like charges repel. Chapter 22: ELECTROSTATICS This lecture will help you understand: Electrical Forces

### Chapter 7. Electricity. Teacher Answer Key. Broughton High School of Wake County

Teacher Answer Key Broughton High School of Wake County 1 Chapter 7 Electricity Physical Science Vocabulary 2 Vocabulary for Chapter 7 Electricity Vocabulary Word Definition 1. Charging by Contact 2. Charging

### A negatively charged object has more electrons than protons. A negatively charged object has more electrons than protons

Electricity Electricity Describes all phenomena caused by positive and negative charges Electrical charge is caused by protons and electrons Electrons and protons are subatomic particles found in the atom

### Electricity Electrostatics Types of materials Charging an Object Van de Graaff Generator

Electricity Electricity is the physical phenomena associated with the position or movement of electric charge. The study of electricity is generally divided into two areas electrostatics and current electricity.

### Name: Block: Date: NNHS Introductory Physics: MCAS Review Packet #4 Introductory Physics, High School Learning Standards for a Full First-Year Course

Introductory Physics, High School Learning Standards for a Full First-Year Course I. C ONTENT S TANDARDS electricity and magnetism. 5.1 Recognize that an electric charge tends to be static on insulators

### History. The word electricity comes from the Greek elektron which means amber. The amber effect is what we call static electricity.

Electrostatics 1 History The word electricity comes from the Greek elektron which means amber. The amber effect is what we call static electricity. 2 ELECTROSTATICS the study of electric charges, forces

### Electricity. Part 1: Static Electricity

Electricity Part 1: Static Electricity Introduction: Atoms Atoms are made up of charged particles. Atoms are made of 3 subatomic particles: Electrons protons, electrons and neutrons. Protons () Charge

### Electric Current & DC Circuits

Electric Current & DC Circuits Circuits Click on the topic to go to that section Conductors Resistivity and Resistance Circuit Diagrams Measurement EMF & Terminal Voltage Kirchhoff's Rules Capacitors*

### HIGH SCHOOL SCIENCE. Physical Science 7: Electricity & Magnetism

HIGH SCHOOL SCIENCE Physical Science 7: Electricity & Magnetism WILLMAR PUBLIC SCHOOL 2013-2014 EDITION CHAPTER 7 Electricity & Magnatism In this chapter you will: 1. Analyze factors that affect the strength

### Section 1: Electric Charge and Force

Electricity Section 1 Section 1: Electric Charge and Force Preview Key Ideas Bellringer Electric Charge Transfer of Electric Charge Induced Charges Charging by Contact Electric Force Electric Field Lines

### Basic Electricity. Chapter 2. Al Penney VO1NO

Basic Electricity Chapter 2 The Structure of Matter All matter is composed of Atoms. Atoms consist of: Neutrons; Protons; and Electrons Over 100 different atoms. These are called Elements. Atoms Electrostatic

### Joy of Science Discovering the matters and the laws of the universe

Joy of Science Discovering the matters and the laws of the universe Key Words Universe, Energy, Quantum mechanics, Chemical reaction, Structure of matter Unless otherwise noted, copied pictures are taken

### Chapter 02. Voltage and Current. Atomic Theory Review. Atomic Theory Review. Atomic Theory Review. Electrical Charge.

Chapter 02 Voltage and Current Atom Atomic Theory Review Contains a nucleus of protons and neutrons Nucleus is surrounded by a group of orbiting electrons Electrons are negative, protons are positive Electrically

### CLASS X- ELECTRICITY

Conductor- Insulator: Materia Materials through which electric current cannot pass are called insulators. Electric Circuit: A continuous a CLASS X- ELECTRICITY als through which electric current can pass

### What Is Static Electricity? A stationary electrical charge that is built up on the surface of a material

Static Electricity What Is Static Electricity? A stationary electrical charge that is built up on the surface of a material Two kinds of charges After being rubbed, a plastic ruler can attract paper scraps.

### Electrostatics. The Nature of Electric Charge

Electrostatics GIRL SAFELY CHARGED TO SEVERAL HUNDRED THOUSAND VOLTS GIRL IN GREAT DANGER AT SEVERAL THOUSAND VOLTS The Nature of Electric Charge Discovery of charge The Greeks first noticed electric charges

### Magnets attract some metals but not others

Electricity and Magnetism Junior Science Magnets attract some metals but not others Some objects attract iron and steel. They are called magnets. Magnetic materials have the ability to attract some materials

### Electric Force and Charges. Conceptual Physics 11 th Edition. What are Atoms Made of?

Conceptual Physics 11 th Edition Electrical Forces and Charges Conservation of Charge Coulomb s Law Conductors and Insulators Chapter 22: ELECTROSTATICS Charging Charge Polarization Electric Field Electric

### Electricity Review completed.notebook. June 13, 2013

Which particle in an atom has no electric charge associated with it? a. proton c. neutron b. electron d. nucleus Jun 12 9:28 PM The electrons in a metal sphere can be made to move by touching it with a

### ELECTRICITY Electric Fence Experiment.

ELECTRICITY Electric Fence Experiment. Can you guess what will happen? What would life be like without electricity? List 4 things that you would miss the most: 1) 2) 3) 4) Positive and Negative Charge

### Electromagnetism Review Sheet

Electromagnetism Review Sheet Electricity Atomic basics: Particle name Charge location protons electrons neutrons + in the nucleus - outside of the nucleus neutral in the nucleus What would happen if two

### Review of Static Electricity

Name: Block: Date: IP 614 Review of Static Electricity Central Concept: Stationary and moving charged particles result in the phenomena known as electricity and magnetism. 5.1 Recognize that an electric

### Preview of Period 10: Electric Charge and Force

Preview of Period 10: Electric Charge and Force 10.1 Electric Charge and Forces What happens when you place a negatively charged rod near an object? How do charges cause objects to move? 10.2 Conductors,

### Test Review Electricity

Name: Date: 1. An operating television set draws 0.71 ampere of current when connected to a 120-volt outlet. Calculate the time it takes the television to consume 3.0 10 5 joules of electric energy. [Show

### Note on Posted Slides

Note on Posted Slides These are the slides that I intended to show in class on Wed. Mar. 13, 2013. They contain important ideas and questions from your reading. Due to time constraints, I was probably

### What does it mean for an object to be charged? What are charges? What is an atom?

What does it mean for an object to be charged? What are charges? What is an atom? What are the components of an atom? Define the following: Electric Conductor Electric Insulator Define the following: Electric

### Electricity. Chapter 21

Electricity Chapter 21 Electricity Charge of proton Positive Charge of electron Negative Charge of neutron NONE Atoms have no charge because the charges of the protons and electrons cancel each other out.

### Electrostatics and Charge. Creating Electric Fields

Electrostatics and Charge Creating Electric Fields Electric Charges Recall that all matter is made of atoms. Neutral atoms can acquire a charge in several different ways, all of which require movement

### Electricity. Prepared by Juan Blázquez, Alissa Gildemann. Electric charge is a property of all objects. It is responsible for electrical phenomena.

Unit 11 Electricity 1. Electric charge Electric charge is a property of all objects. It is responsible for electrical phenomena. Electrical phenomena are caused by the forces of attraction and repulsion.

### Electricity Worksheet (p.1) All questions should be answered on your own paper.

Electricity Worksheet (p.1) 1. In terms of attraction and repulsion, how do negative particles affect negative particles? How do negatives affect positives? 2. What happens to electrons in any charging

### Properties of Electric Charge

1 Goals 2 Properties of Electric Charge 2 Atomic Structure: Composed of three main particles: 1. Proton 2. Neutron 3. Electron Things to Remember: 3 Everything is made of atoms. Electrons can move from

### ELECTRICITY UNIT REVIEW

ELECTRICITY UNIT REVIEW S1-3-04: How does the Atomic Model help to explain static electricity? 1. Which best describes static electricity? a) charges that can be collected and held in one place b) charges

### Electricity & Magnetism

Electricity & Magnetism Unit 7 Recall that Atoms l Have neutrons, protons, and electrons. l Protons are positively charged l Electrons are negatively charged l Opposite charges attract l Same charges repel

### Electricity & Magnetism. Unit 6

Electricity & Magnetism Unit 6 Recall that Atoms l Have neutrons, protons, and electrons. l Protons are positively charged l Electrons are negatively charged l Opposite charges attract l Same charges repel

https://www.youtube.com/watch?v=yc2-363miqs SCIENCE 9 UNIT 3 ELECTRICITY Remember: In the last unit we learned that all matter is made up of atoms atoms have subatomic particles called, protons, neutrons

### Electric Charge. Conductors A material that transfers charge easily Metals

Electric Charge An electrical property of matter that creates a force between objects. Like charges repel Opposite charges attract Equal amount of positive and negative = no net charge Electrons: Negative

### Review. Multiple Choice Identify the letter of the choice that best completes the statement or answers the question.

Review Multiple Choice Identify the letter of the choice that best completes the statement or answers the question. 1. When more devices are added to a series circuit, the total circuit resistance: a.

### 1) The charge of an electron is. A) negative. B) positive. C) Electrons have no charge.

1) The charge of an electron is A) negative. B) positive. C) Electrons have no charge. 2) Two like charges A) have no effect on each other. B) repel each other. C) must be neutrons. D) neutralize each

### Conceptual Physical Science 6 th Edition

Conceptual Physical Science 6 th Edition Chapter 8: STATIC AND CURRENT ELECTRICITY 1 Chapter 8: STATIC AND CURRENT ELECTRICITY Chapter 8: Read: All Homework: Four problems from the following set: 4, 6,

### Algebra Based Physics

Page 1 of 105 Algebra Based Physics Electric Current & DC Circuits 2015-10-06 www.njctl.org Page 2 of 105 Electric Current & DC Circuits Circuits Conductors Resistivity and Resistance Circuit Diagrams

### The object experiencing the field is called the TEST OBJECT

A field is an invisible area of influence around an object If you place another object in the field it will experience a force 1 object is said to be causing the field The object experiencing the field

### Electric Current & DC Circuits How to Use this File Electric Current & DC Circuits Click on the topic to go to that section Circuits

Slide 1 / 127 Slide 2 / 127 Electric Current & DC Circuits www.njctl.org Slide 3 / 127 How to Use this File Slide 4 / 127 Electric Current & DC Circuits Each topic is composed of brief direct instruction

### Electron Theory. Elements of an Atom

Electron Theory Elements of an Atom All matter is composed of molecules which are made up of a combination of atoms. Atoms have a nucleus with electrons orbiting around it. The nucleus is composed of protons

### Circuits. Electric Current & DC Circuits. Slide 1 / 127. Slide 2 / 127. Slide 3 / 127. Slide 4 / 127. Slide 5 / 127. Slide 6 / 127

Slide 1 / 127 Slide 2 / 127 New Jersey Center for Teaching and Learning Electric Current & DC Circuits www.njctl.org Progressive Science Initiative This material is made freely available at www.njctl.org

### SECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM

SECTION 3 BASIC AUTOMATIC CONTROLS UNIT 12 BASIC ELECTRICITY AND MAGNETISM Unit Objectives Describe the structure of an atom. Identify atoms with a positive charge and atoms with a negative charge. Explain

### Review of Static Electricity

Name: KEY lock: Date: IP 670 Match each of the following terms with the appropriate description. Write the letter of the best answer to the left. Terms Description C 1. atom a. a small, negatively charged

### ALABAMA SCHOOL OF FINE ART, 8 TH GRADE HONORS PHYSICS QUIZ : ELECTROSTATICS TIME: 90 MINUTES NAME

1 ALABAMA SCHOOL OF FINE ART, 8 TH GRADE HONORS PHYSICS QUIZ 4-18-2016: ELECTROSTATICS TIME: 90 MINUTES NAME COVERAGE: ELECTRIC CHARGE, ELECTROSTATIC FORCE (COULOMB S LAW ), ELECTRIC POTENTIAL, ELECTRIC

### WHAT ARE THE EFFECTS OF MOVING CHARGES?

ELECTRICITY WHAT ARE THE EFFECTS OF MOVING CHARGES? ELECTRICAL CHARGES Most atoms have the same number of protons and electrons. They often lose and gain electrons. When this happens, the atom s charge

### 3/9/2016. Chapter 25 Electric Charges and Forces. Chapter 25 Preview. Chapter 25 Preview

Chapter 25 Electric Charges and Forces Pickup PSE3e Photo from page 720, lightning (perhaps change the fonts and make this photo fill the entire slide) Chapter Goal: To describe electric phenomena in terms

### Electric Charge. Electric Charge ( q ) unbalanced charges positive and negative charges. n Units Coulombs (C)

Electric Charge Electric Charge ( q ) unbalanced charges positive and negative charges n Units Coulombs (C) Electric Charge How do objects become charged? Types of materials Conductors materials in which

### Electric Charge. Labs, Activities & Demonstrations: Notes: Unit: Electricity & Magnetism NGSS Standards: N/A

Add Important Electric Charge Page: 424 NGSS Standards: N/A Electric Charge MA Curriculum Frameworks (2006): 5.1, 5.4 AP Physics 1 Learning Objectives: 1.B.1.1, 1.B.1.2, 1.B.2.1, 1.B.3.1 Knowledge/Understanding

### Electricity

Electricity Electric Charge There are two fundamental charges in the universe. Positive (proton) has a charge of +1.60 x 10-19 C Negative (electron) has a charge of 1.60 x 10-19 C There is one general

### Nucleus. Protons(+) and. Neutrons

What is "Matter"? All matter is made of tiny particles called" atoms'. Atoms are made up of even smaller particles called: o Protons (particles with a positive charge found in the centre (nucleus) of the

### Magnetic Attraction and Electromagnetism. Spring 2011

Magnetic Attraction and Electromagnetism Spring 2011 The Nature of Magnetism Magnets are found everywhere doorbells, TV s, computers Magnets were discovered in a region in Greece called.you guessed it

### Electrostatics and Electric Potential - Outline

Electrostatics and Electric Potential - Outline 1. Understand the basic properties of electric charge, including conservation of charge and that charges are quantized. 2. Differentiate between conductors

### Electromagnetism. Electricity Electromagnetism Magnetism Optics. In this course we are going to discuss the fundamental concepts of electromagnetism:

Electromagnetism Electromagnetism is one of the fundamental forces in nature, and the the dominant force in a vast range of natural and technological phenomena The electromagnetic force is solely responsible

### Conceptual Questions. Fig.8.51 EXERCISES. 8. Why can t electric field lines cross? 9. In which direction do charges always move in an electric field?

EXERCISES Conceptual Questions 1. Explain why a neutral object can be attracted to a charged object. Why can this neutral object not be repelled by a charged object? 2. What is the function of an electroscope?

### Circuits. Electric Current & DC Circuits Circuits. Unit 6. April Electric Current. Electric Current. Electric Current. ΔQ Δt

Electric Current & DC Circuits Electric Current & DC Circuits Circuits Conductors esistivity and esistance Click on the topic to go to that section Circuit Diagrams Measurement Electric Current Circuits

### What are the two types of current? The two types of current are direct current and alternating current.

Electric Current What are the two types of current? The two types of current are direct current and alternating current. Electric Current The continuous flow of electric charge is an electric current.

### LESSON 5: ELECTRICITY II

LESSON 5: ELECTRICITY II The first two points are a review of the previous lesson 1.1.ELECTRIC CHARGE - Electric charge is a property of all objects and is responsible for electrical phenomena. -All matter

### Unit 3. Electrostatics

Unit 3. Electrostatics Electricity throughout history Even though electricity is present in nature in many ways lightning is probably the most spectacular one, it has not been easy to interpret and understand

### 10th week Lectures March Chapter 12

Electric charge. 10th week Lectures March 20. 2017. Chapter 12 Conductors and Insulators Coulomb law Electric field Electric Potential 3/20/2017 Physics 214 Spring 2017 1 Electric charge an atom has a

### Physics 122 Unit 3 S1 Electrostatics Weebly.notebook. Unit 3. Section 1 Electrostatics

Unit 3 Section 1 Electrostatics Electrostatics Electrostatics is the study of stationary electric charges. Only two types of electric charge have been discovered, positive and negative. proton (1.673 x

### Greek Letter Omega Ω = Ohm (Volts per Ampere)

) What is electric current? Flow of Electric Charge 2) What is the unit we use for electric current? Amperes (Coulombs per Second) 3) What is electrical resistance? Resistance to Electric Current 4) What

### Electricity Worksheets

Electricity Worksheets Jean Brainard, Ph.D. Say Thanks to the Authors Click http://www.ck12.org/saythanks (No sign in required) To access a customizable version of this book, as well as other interactive

### Revision checklist SP10. SP10 Electricity and Circuits. SP10a Electric circuits. SP10b Current and potential difference

Electricity and Circuits a Electric circuits Describe the basic structure of an atom (positions, relative masses and relative charges of protons, neutrons and electrons). Recognise the circuit symbols

### Man Struck By Lightning: Faces Battery Charge. Electricity

Man Struck By Lightning: Faces Battery Charge Electricity Properties of Electric Charge (Elektrisk ladning) Electric charges (q) repel or attract each other Like charges repel Opposite charges attract

### Circuits. Circuits. Electric Current & DC Circuits. current and circuits presentation March 22, How to Use this File.

New Jersey Center for Teaching and Learning Electric Current & DC Circuits Progressive Science Initiative This material is made freely available at www.njctl.org and is intended for the non commercial

### Unit 2: Fields. Substances that possessed an electric charge were noticed to show two different states; these were classified as either negative or

Unit 2: Fields Part 1: Electrostatics (Read section 524-534) Section I : Definition of Electrostatics Electrostatics is the study of electricity at rest. Early Greeks noticed that when a piece of sap or

### Theme 5: Electricity in the Home

Theme 5: Electricity in the Home Static Electricity WHAT IS STATIC ELECTRICITY? Everything we see is made up of tiny little parts called atoms. So what are atoms made of? In the middle of each atom is

### Some differences: Some basic similarities: Charges. Electrons vs. Protons 4/3/15. Chapters 22-25: Electromagnetism!

Chapters 22-25: Electromagnetism! Electric Force vs. Gravitational Force What properties does the gravitational force depend on? What properties does the electric force depend on? F grav = Gm 1 m 2 /d

### Electrostatics. Electrostatics the study of electrical charges that can be collected and held in one place. Also referred to as Static Electricity

Electrostatics 169 Electrostatics Electrostatics the study of electrical charges that can be collected and held in one place. Types of Charge Also referred to as Static Electricity Benjamin Franklin noticed

### Electric Charge and Static Electricity

Electric Charge and Static Electricity Electric Charge All matter is made up of atoms Atoms contain 1. Protons (+) 2. Neutrons (0) 3. Electrons (-) Law of Electric Charges The law of electric charges states

### People experience static electricity everyday.

Electrostatics Electrostatics/static electricity is the branch of physics that deals with electrical charges or charged objects, and their interactions. The charges are stationary. People experience static

### Electrostatics. Physics 10. Atomic Structure

Slide 1 Slide 6 Slide 2 Slide 7 Slide 3 Slide 8 Slide 4 Slide 9 Slide 5 Slide 10 Physics 10 Electrostatics Slide 11 Slide 12 Slide 13 Slide 14 Slide 15 Slide 16 Slide 17 Slide 18 Slide 19 Slide 20 Slide

### PHYSICS - Electrostatics

PHYSICS - Electrostatics Electrostatics, or electricity at rest, involves electric charges, the forces between them, and their behavior in materials. 22.1 Electrical Forces and Charges The fundamental

### Static Electricity Electrostatics

Behavior of charges Unlike charges attract Like charges repel A neutral object will attract both positive and negative charges Static Electricity Electrostatics 1 4 Static not moving. Electric charges