PT UNIT 1 Subunit 3.


Similar presentations
Electrical Force Unit 1.3.

Define electric potential, or voltage. Differentiate between AC and DC. Identify the most common source of DC voltage. Describe how to connect.
What is an electric charge?
Electricity and Magnetism
Electricity. Charge Defn: Property of matter that determines how it will interact with other matter via the electrostatic force; opposite charges attract,
Electricity The flow of charges. Atoms MMade up of: Nucleus: Protons and neutrons Electrons: negative charge orbit nucleus.
Chapter 9 Static and Current Electricity
Gravity, Electricity, & Magnetism
Electric and Magnetic Phenomena
Chapter 6 – Electricity. 6.1 Electric Charge Positive and Negative Charges Matter is composed of _______ Atoms are composed of protons, neutrons and electrons.
ENGR 111 Lecture 3 Reading: Chapters 19, Class notes.
EE580 – Solar Cells Todd J. Kaiser Lecture 07 EE Fundamentals 1Montana State University: Solar Cells Lecture 7: EE Fundamentals.
Electricity and Circuits
Introduction to Electricity Static Electricity and Electrical charge.
Concept Summary Batesville High School Physics. Potential Difference  Charges can “lose” potential energy by moving from a location at high potential.
Electricity. Composition of matter Electrical Charge Current flow Voltage Source Cells & Batteries Resistance & Conductance Electric Circuits.
ELECTRICITY NOTES. ELECTRICITY ELECTRICITY: form of energy that occurs when electrons move from place to place Electricity can form whenever (e - ) electrons.
Electricity and Magnetism ISCI Electricity is a Force – Vector – Electric charges (attract and repel) – Comb and Ball Example 2.Atoms – Protons.
© 2012 Delmar, Cengage Learning Basic Electrical System Theory and Repairs Chapter 25.
Electricity and Magnetism Chapters 11 and 12 Central High School Physical Science.
Physics 4.4. Charge  What is charge?  Where do you see charge around you?  Describe the atom in terms of charge?
Electricity Chapter 20.
Copyright © by Holt, Rinehart and Winston. All rights reserved. Section 1 Electrical Charge and Force  Indicate which pairs of charges will repel and.
Things you need to know… About the electricity and magnetism Unit Test.
Voltage in Electrical Systems Objectives Define electric potential, or voltage. Differentiate between AC and DC. Identify the most common source.
Please Be Courteous To Others Turn off all cell phones.
1 Electricity Chapter Topics Covered in Chapter 1
A Unit 4 Review. When an object is charged, it has an imbalance of electrons. Static electricity is another term used to describe this. You can charge.
Voltage in Electrical Systems. Unit 4 Voltage Pages  Voltage source  Conductors  Control element  Electrical appliance  Electrical loads 
Matter is made up of small particles called atoms. Atoms are made up of smaller, sub-atomic particles called protons, neutrons, and electrons. Sub-atomic.
Current and Static Electricity Bingo Ms. Keegan. Clue: This flow of electrons comes from a wall outlet Alternating Current.
1 DC ELECTRICAL CIRCUITS ELECTRICAL FORCE. 2 DC ELECTRICAL CIRCUITS Current will not flow in a circuit unless an external force is applied. A popular.
Electric Potential and Electrochemical Cells 10.3, 10.5.
Forces By the early 19th century, physicists had classified the apparent myriad of forces in nature to just 3 kinds: Gravitational force Electric force.
Physics 106 Lesson #9 Electrochemical Cells and Batteries Dr. Andrew Tomasch 2405 Randall Lab
Electricity and Electronics Brad Dearing 108 University High School Normal, IL (309)
Chapter 7 Electricity. What is Charge? Protons have a (+) charge Electrons have a (-) charge Charge (q) is measured in Coulombs The elementary charge.
Electricity. Electric Charge- property that causes subatomic particles such as protons and electrons to attract or repel each other An excess or shortage.
PS-6 Test Review What must increase to effect the KE of an object the most? The velocity because it is squared in the formula… KE= ½ mv 2.
Electricity. Electric Charge and Force  Electric Charge- electrical property of matter that creates a force between objects. Charges- 2 charges generated.
Voltage in Electrical Systems. I. Universal Forces A. Gravity 1. Newton’s universal law of gravitation 2. Fg = G (m 1 m 2 /d 2 ) 3. G = 6.67 X
Electric Current and Resistance Physics. Potential Difference  Charges can “lose” potential energy by moving from a location at high potential (voltage)
Current Electricity. Let’s review what we know about electric charges: Objects are made of negative and positive charges Objects are made of negative.
Sci-101 Introduction to Physics Dr. Alexander Dzyubenko Chap. 9 Static and Current Electricity adzyubenko © A.B. Dzyubenko 2003,
Electrical Potential When charges are within an electric field an electrical potential difference is created. Volt – unit of measurement for potential.
Electrical Energy (electricity). What is electricity? It is the flow of moving electrons When electrons flow, it is called an electric current.
Lecture A Fundamentals and Background. Charge “Charge” is the basic quantity in electrical circuit analysis Fundamental charge quantity is the charge.
Electricity Topics Covered in Chapter 1 1-1: Negative and Positive Polarities 1-2: Electrons and Protons in the Atom 1-3: Structure of the Atom 1-4: The.
Electric Current Charges on the move!. What makes a charge move? Electric current moves due to potential difference Electric potential difference is measured.
JEOPARDY Electricity and Magnetism
Introduction to Electricity
ELECTRIC CIRCUITS. Chapter Twenty: Electric Circuits  20.1 Charge  20.2 Electric Circuits  20.3 Current and Voltage  20.4 Resistance and Ohm’s Law.
ELECTRIC FORCE AND WORK. Fields Electricity and gravity both act at distance Have regions (called “fields”) where they – alter space – change how objects.
Electricity & Magnetism Chapter 8. Student Learning Objectives Recall properties of charge Characterize static electricity Differentiate between series.
Chapter 13.1 ELECTRICITY AND MAGNETISM. Electric Charge  An electrical property of matter that creates a force between objects example: Touching a doorknob.
Basic Electricity All material is made of atoms (we think) All material is made of atoms (we think) –Atoms are comprised of  Nucleus: protons (+) and.
Electricity. All matter is made up of positive charges and negative charges.
Ch. 1.3 Voltage in Electrical Systems. Gravitational and Electrical Force Gravitational force and electrical force are two universal forces in nature.
Voltage in Electrical Systems. Unit 4 Voltage Pages (leave a space in between)  Voltage source  Conductors  Control element  Electrical appliance.
16.2 Current and Voltage. Electric Current (review from yesterday) Electric current: the flow of electric charge (movement of electrons)
Unit 8 Electricity and Magnetism. Page 9: Essential Question 1 What causes charged objects to push and pull on each other?
Electricity & Magnetism. Electricity Electric charges are from protons+ which are positive particles and electrons- which are negative particles. Static.
 uAzyzK4&feature=related.
Electric Charge & Static Electricity Like charges repel one another while opposite charges are attracted to one another. Law of Electric charge--
Electrical Charge We can talk positive and negative electrical charges. Can we transfer charges from one object to another? –Yes Can you think of an example?
Sources of Electricity Electronics 1 CVSD. Resistance A measure of the opposition to the flow of electrons through a material Unit of Measurement: – Ohm.
Presentation transcript:

PT UNIT 1 Subunit 3

Newton’s Universal Law of Gravitation
Every Object in the universe attracts every other object with a force that (for two bodies) is directly proportional to the mass of each body and that is inversely proportional to the square of the distance between them.

Two kinds of charges Positive and Negative Charges cause electrical force

Law of Charges: Like charges repel and unlike charges attract.

the origin of electrical charge is the atom
the origin of electrical charge is the atom. All matter is made of atoms. In the center of the atom is a nucleus that contains positive charged protons.

The charge of a normal atom is zero.
Charges can be transferred from one object to another by adding electrons. A neutral atom has a zero charge. Adding electrons to a neutral object makes a negative charge object. Taking away electrons from a neutral object makes a positive charged object.

Principle of conservation of charge: The net charge in an isolated system never changes.

Coulomb’s Law

Elementary Charge is the charge of one electron or one proton.

A mass as potential if it is moved through a gravitational field.

A charge has potential if it is moved through an electric field
A charge has potential if it is moved through an electric field. The field creates an electrical potential between A and B.

Electrical forces create a voltage difference whenever the positive and negative charge are separated.

Voltage act like a force in an electrical system
Voltage act like a force in an electrical system. It causes electrons to move. Electrons are negative charged particles found in the outer part of the atom.

Voltage is the forcelike quantity in electrical systems.
Voltage is measured in volts.

A flow of charge is called a current.

Electric systems are made of (1)Voltage source) (2) conductors (3) Control elements (4) load
Voltages source-Battery, electrical plug in, generator Conductors-wires Control element- switch Load-appliances, lights, etc

Electrical circuit is a closed path made by connecting voltage sources, control elements and loads.

Two types of electricity.
Direct current (DC) is current that moves in one direction only. Alternating current (AC) is current that moves back and forth in the wire. Current is movement of electrons.

Dry cell batteries uses a paste material that contains the chemical that produces the voltage.
Wet cell batteries use a liquid material that contains the chemical to produce the voltage.

Primary cells are those cells that cannot be recharged.
Secondary cells are those cells that can be recharged.

The terminals of a battery are called electrodes.
The positive electrode is called the Anode. The negative electrode is called the cathode.

Connecting voltage sources in series so they add together requires that the positive electrode from one source is connected to the negative electrode of the other source.

Main sources of AC are generators and electrical outlets.
The rate at which the current is changing back and forth is its frequency (f) Units are cycles/sec = hertz

Voltage difference can be created by
(1) Chemical means –Chemical energy in dry or wet cells separates the charges to form a positive pole and a negative pole. (2) Magnetic/Mechanical– A coil of wire moving in a magnetic field produces a force on electrical charges that separates the positive and negative charges. (3) Light- light energy that falls on certain materials causes the separation of electrons from their atoms.

Voltage is measured by using a volt meter, panel meter and a oscilloscope and a multimeter.