UNIT 6 ELECTRICITY.

Slides:

Advertisements

Similar presentations

Electricity Active Physics. The Atom All matter is made up of atoms Atoms are made up of 3 types of particles protons, electrons and neutrons Protons.

Advertisements

Chapter 17: Introduction to Electricity Review. a)law of electric charges (like charges repel and opposite charges attract) b)electric force (the force.

The amount of charge passing a point in a given time interval is.

What is Electricity? Electricity is the flow of moving electrons. When the electrons flow it is called an electrical current.

Chapter 13 Electricity!. Quick review: Conductors Insulators Like charges ___________ and unlike charges _____________. Repel Attract.

Electricity and Electrical Circuits. Chapter Sections O 1 - Electrical Circuits O 2 - Current and Voltage O 3 - Resistance and Ohm’s Law.

Electricity. whether two charges attract or repel depends on whether they have the same or opposite sign unit of measurement for charge is the coulomb.

P5 – Electric Circuits. Static Electricity When two objects are rubbed together and become charged, electrons are transferred from one object to the other.

Arsenie, May 2015 Electrostatics. Electrostatics, or electricity at rest, involves electric charges, the forces between them, and their behavior in materials.

Do Now What work is required to move 7 coulombs of charge through a potential difference of 3 volts?

Nature of Electricity. Nature of Current Electricity To make things work  Need source 1.5 V cell has a limited life ( use it then throw it away) 240.

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.

TECHNOLOGIES ESO 4 UNIT 1: ELECTRICITY AND ELECTRONICS 3rd YEAR SUMMARY.

Ordinary matter is made up of atoms that have positively charged nuclei and negatively charged electrons surrounding the nucleus. There is NO significance.

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.

Electric Current Electrical current is the flow of electrons. Unlike static electricity, charges are in motion. Two types of Current I. Direct current.

Electricity & Magnetism Chapter 19 and 20 Review for Test April 19, 2005.

 Electricity is caused by the flow (or net movement) of Electrons  Electric Current – the rate that positive charges flow in a circuit › Actually a.

Electric Charge Electric charge is the physical property of matter that causes it to experience a force when placed in an electromagnetic field. There.

4.2.3B Electrical Power What About Watts?. Power Law Moving electrons (current) requires ENERGY How much energy gets used depends on: Strength of push.

Chapter 7 Electricity. What is Charge? Protons have a (+) charge Electrons have a (-) charge Charge (q) is measured in Coulombs The elementary charge.

Electricity. Conductors and Insulators Conductors are materials that allow electricity to flow easily Examples: metal, water, air and some chemicals Insulators.

Ohm’s Law Conductor A conductor is a material that current can pass through easily, like metals.

Fundamentals of Electricity Franklin County Amateur Radio Club Technician Class License Course Class 2a – Fundamentals of Electricity, Part 1 Bob Solosko.

Electricity: The Mouse and Cheese Analogy

Electric Current and Circuits Physics. Current The flow of charges Rate at which electric charges (+ or - ) pass through a conductor – Charge passes per.

1 Chapter 20 Review activity! Fun in B208!.  A. Unit of energy  B. Unit of charge  C. Unit of current  D. Unit of voltage. 2 What is a coulomb?

Static, Currents, Circuits

Electric Current. Ohm’s Law

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.

Chapter 13.1 ELECTRICITY AND MAGNETISM. Electric Charge  An electrical property of matter that creates a force between objects example: Touching a doorknob.

Jag Mark What kind of charging does the PowerMat utilize?

Electricity on the Move. Current Electricity Unlike static electricity, which does not move except when discharged, current electricity is a continuous.

Physical Science Chapter 17

Chapter 6 Lesson 2. How can electricity flow? When an object gains of loses electrons, it has an electric charge. Similar to magnetic force, unlike charges.

Circuits. Diagramming Circuits 1. conductor 2. light bulb 3. switch 4. battery 5. resistor 6. ammeter 7. voltmeter.

a path along which electrons flow must have no breaks in the path to work 2 types: –closed (no breaks) –open (break, causes the device to shut off - switch)

Electricity and Circuits

Exam Review Electricity. Electric Charges An electric charge is a negative or a positive amount of electricity that builds up in an object. Electrons.

Ohm’s Law PSSA Requirement Unit 9 Honors Physics.

Electricity and Circuit. Types of Electricity Static Electricity – no motion of free charges Current Electricity – motion of free charges – Direct Current.

Chapter Twenty: Electric Circuits  20.1 Charge  20.2 Electric Circuits  20.3 Current and Voltage  20.4 Resistance and Ohm’s Law.

UNIT 1: ELECTRICITY AND ELECTRONICS (PART 1) TECHNOLOGIES ESO 3.

Chapter Eight: Electricity and Magnetism 8.1 Electricity 8.2 Electrical Circuits and Electrical Power 8.3 Properties of Magnets.

Electricity. Form of energy Involves movement of electrons Can be transferred into light, heat, sound, mechanical, and magnetic energy Example: electromagnets-

Chapter Twenty: Electric Circuits

Electricity Cont… Turk.

ELECTRIC CIRCUITS.

Electricity and Circuit

Electric Circuit Components are connected together with electrical wire to form a closed loop. Components are represented by symbols 1.

18.6 Electricity - Review.

Physics Unit 5 - Electricity

Voltage and Power.

Electricity Energy of electrons.

Electric & Magnetic Energy

Created by Mr. Gable Technology Education Maple Grove Junior High

Electric Circuits (12.2).

Electricity 2 objectives.

Electric Circuits (12.2).

VOCABULARY Electric field - the electric force per unit charge; it is radially outward from a positive charge and radially in toward a negative point charge.

CHAPTER 1 ELECTRICITY.

Intro to Electricity

Chapter 12: Electrical Energy Production

Modified by Mr. Wanninkhof

Electricity II. Electric Current Circuit Potential Difference Current

Electricity I. Electric Charge Static Electricity Conductors

Principles of Electricity: Electric Charge and Force

Basic Circuits.

Presentation transcript:

UNIT 6 ELECTRICITY

WE HAVE AN OBJECT, A MATERIAL…

WE USE A MICROSCOPE…

WE CAN SEE…

IF WE COULD SEE A SMALLER PART…

Electrons are responsible of electricity!!!!! HOW???

1. ELECTRICITY Electric charge is a property of all objects and is responsible for electrical phenomena.

These phenomena are caused by the electrical forces of attraction and repulsion

ATTRACTION John Mary

REPULSION Peter Celia

REPULSION ATRACTION Two objects with the same charge repel each other. Two objects with different charge atract each other

TWO POSSIBILITIES a)-STATIC ELECTRICITY b)-ELECTRIC CURRENT

a)-STATIC ELECTRICITY https://www.youtube.com/watch?v=V1c61Q7qU-s https://www.youtube.com/watch?v=jZEFuCxD7BE

b)Electric current Electric current is a continuous movement of electrons

Materials that allow electric current to pass through them. CONDUCTORS Materials that allow electric current to pass through them. Copper, Silver, Aluminum

Materials that don’t allow electric current to pass through them. INSULATORS Materials that don’t allow electric current to pass through them. Plastic, Ceramic, Wood

What produces an electric current? IMBALANCE: There must be an imbalance between two points of a conductor

1.1. ELECTRIC CIRCUITS An electric circuit is a set of connected components through which an electric current circulates.

1 -something to move electrons A generator

2 -something to transform electrical energy:A bulb, a motor, a bell… A receptor A receptor transform electrical energy into another type of energy

3 -conductor A wire…

4 –control and protection components… A switch, a push button… Control component: stop, start or change the direction of the electric current Protection component:stops the current when it´s too strong.

SYMBOLS Bulb Switch Push switch Battery Motor

1.2. Effects of electric current

a) Heat Electrons crash into the atoms and part of the energy is transformed into heat

b) Light When the temperature of an object increases a lot, light begins to appear.

c) Motion Motors transform electrical energy into motion.

Page 129 Exercises 3, 5, 6, 7

2. ELECTRIC QUANTITIES CHARGE (Q) COULOMBS It’s the amount of electricity stored in an object

ELECTRIC QUANTITIES VOLTAGE (V) It’s the difference between the electrical energy at two points in a circuit.

ELECTRIC QUANTITIES CURRENT (I) It’s the number of electrons that pass through a specific point in one second.

ELECTRIC QUANTITIES RESISTANCE (R) It’s the oposition of the components of a circuit to the flow of the electric current.

2.1. MEASURING INSTRUMENTS VOLTIMETER: measures the electrical voltage (in volts)

POLYMETER: measures different electric quantities (voltage, current, resistance) on different scales.

2.2. OHM´S LAW Is the proportional relationship between voltage, current and resistance. V: voltaje (v) I: current (A) R: resistance (Ω)

Page 131 Exercises 10, 13, 14, 15 Page 132 Exercises 1, 3, 5, 6