Field Around Magnet Use a compass to map the direction of the magnetic field surrounding a magnet. White board your results. In particular: how does the.

Slides:

Advertisements

Similar presentations

Magnetic Forces and Magnetic Fields

Advertisements

24-1 Magnets: permanent & temporary

PHYSICS UNIT 8: MAGNETISM

How to Use This Presentation

Chapter 20 Magnetism.

Magnetism Review and tid-bits. Properties of magnets A magnet has polarity - it has a north and a south pole; you cannot isolate the north or the south.

Ch 20 1 Chapter 20 Magnetism © 2006, B.J. Lieb Some figures electronically reproduced by permission of Pearson Education, Inc., Upper Saddle River, New.

An object that attracts iron containing objects Has two poles North and south Law of poles- Like poles repel while opposite attract.

Chapter 22 Magnetism.

Magnetism and Electromagnetism

Magnetism Magnetic Force 1 Definition of Magnetic Field Cross Products Bar Magnets Horseshoe Magnets The Earth’s Magnetic Field.

Magnetic Fields.

MAGNETS AND ELECTROMAGNETISM. MAGNETISM Electric currents or the movement of electrons in an atom will create the property of magnetism in an object What.

Magnetism and Electromagnetism

Magnetism Magnetism is a property of certain metals that is due to the orientation of atoms within the material.

Magnetic Field Lines for a Loop Figure (a) shows the magnetic field lines surrounding a current loop Figure (b) shows the field lines in the iron filings.

MAGNETISM MAMBO.

White board your results. In particular:

Week 1 Introduction to Magnetism Liceo Alfano. What is a Magnet? Applet A magnet is any piece of material that will attract iron Imagine living hundreds.

Fields Model used when force act a distance. Quantity / unit measure.

MAGNETISM Adapted from Mr. Dellibovi

Magnetic Fields and Forces

Chapter 33 The Magnetic Field

Magnetism Force of Mystery demo. Magnetism Standards Students know magnetic materials and electric currents (moving electric charges) are sources of magnetic.

Magnetism Chapter 36. What is a Magnet? Material or object that produces a magnetic field. Two types:  Permanent  Electromagnet.

Copyright © 2010 Pearson Education, Inc. Lecture Outline Chapter 22 Physics, 4 th Edition James S. Walker.

Magnetism Force of Mystery Presentation Text ©2001 Philip M. Dauber as modified by R. McDermott.

Magnetism Magnetism is the force of attraction or repulsion of a magnetic material due to the arrangement of its atoms, particularly its electrons. Like.

Book Reference : Pages To recap the nature of the magnetic field around a bar magnet & the Earth 2.To understand the nature of the magnetic field.

Chapter 19 Magnetism. Magnets Poles of a magnet are the ends where objects are most strongly attracted Poles of a magnet are the ends where objects are.

Magnetism. Magnets ► A magnet has polarity - it has a north and a south pole; you cannot isolate the north or the south pole (there is no magnetic monopole)

Magnetism. Chapter 19 Problems ,2,5, ,15, ,21, , ,38, , ,47.

 Like poles repel  Unlike poles attract A Magnetic Field is defined as the direction a small north pole would move if placed at that point. The symbol.

 Natural Magnets  Magnetite, Fe 3 O 4 (an oxide of iron)  Ancient civilizations (Greek 590 BCE, Chinese 2600 BCE) realized that these stones would.

Chapter 19 Table of Contents Section 1 Magnets and Magnetic Fields

Forces: F net causes acceleration. Forces – act at distance F g – attractive btw masses. F e – attractive/repulsive between objects w net charge. F mag.

Electricity and Magnetism

What is magnetism Magnetism is a force which cannot be seen and does not require contact to be felt. It exists between two pieces of magnetic material,

Magnetism. Force Attractions exist between some metals Force is most concentrated at the ends of the metal object Ends are called Poles (North and South)

Magnetism. Magnets ► A magnet has polarity - it has a north and a south pole; you cannot isolate the north or the south pole (there is no magnetic monopole)

Electromagnetism.

Fields & Forces Magnetism Electro- magnetism Applications of Magnetism Game Board.

 successfully connected electricity and magnetism  aligned a straight wire with a compass pointing to Earth’s magnetic north  when current is present,

© Houghton Mifflin Harcourt Publishing Company Preview Objectives Magnets Magnetic Domains Magnetic Fields Chapter 19 Section 1 Magnets and Magnetic Fields.

Magnets and Magnetic Fields

Magnets and Magnetic Fields Magnetic Forces. Is the force a magnet exerts on another magnet, on iron or a similar metal, or on moving charges. - acts.

Magnetic Substances  A magnet is an object that can attract other objects containing iron, cobalt, or nickel.  Magnetism describes all the phenomena.

MAGNETIC FIELDS AND ELECTRIC CURRENT. 2  A magnetic field is created whenever an electric current flows through a conductor.  This is electromagnetism.

Magnetism Unit 12. Magnets Magnet – a material in which the spinning electrons of its atom are aligned with one another Magnet – a material in which the.

MAGNETIC FORCES, FIELDS, AND OERSTED’S PRINCIPLE Lesson 10.

Magnets. Magnetic Force Force around a magnet that is felt before magnets touch.

SPH3U: Electricity Intro to Magnetism. Magnetic Poles Every magnet has a north and south pole  Like Poles Repel  Opposite Poles Attract SNNSNSNS.

Magnetic Fields A vector quantity Symbolized by

Magnetism. Magnets Poles of a magnet are the ends where objects are most strongly attracted – Two poles, called north and south Like poles repel each.

Magnetism Magnetism originates at the atomic level and is caused by moving electric charge Magnetic objects: Create magnetic fields around themselves.

Chapter 19 Preview Objectives Magnets Magnetic Domains Magnetic Fields

Magnetism and Electromagnetism

Magnetic Fields Magnetic Forces

Electromagnetic Forces and Fields

Electromagnetic Forces and Fields

Magnetism Force of Mystery demo.

Unit 10: Magnetism Pre-AP Physics.

Magnetic Fields.

Reading Quiz 2. What is the shape of the trajectory that a charged particle follows in a uniform magnetic field? Helix Parabola Circle Ellipse Hyperbola.

Active Figure 29.1 Compass needles can be used to trace the magnetic field lines in the region outside a bar magnet.

Presentation transcript:

Field Around Magnet Use a compass to map the direction of the magnetic field surrounding a magnet. White board your results. In particular: how does the strength of the field vary with distance from the wire? how does the field direction relate to the poles of the magnet? General Physics 2 Magnetism

Activity: Map Field of Magnets Use iron filings to map the field of a bar magnet horseshoe magnet White board results draw field lines. how might magnets generate magnetic fields? General Physics 2 Magnetism

Magnetic Field Lines direction of magnetic field, B, is parallel to field line number of lines per area is proportional to strength of field field lines point from N to S field lines form closed loops General Physics 2 Magnetism

Magnetism No magnetic monopoles! General Physics 2 Magnetism

Magnets are similar to Electric Dipoles General Physics 2 Magnetism

Ferromagnetism Ferromagnetic material Preferentially Random downwards iron or other materials that can be made into magnets You can make a magnet from iron by placing it in a strong B field individual domains become aligned with external B field Loss of magnetism from: dropping heating Curie temperature 1043 K for iron Preferentially downwards Random General Physics 2 Magnetism

Cross Product – Right Hand Rule General Physics 2 Magnetism

Specifying 3 Dimensions out of page tip of arrow into page tail of arrow General Physics 2 Magnetism

Force on a moving charge Right Hand Rule (#2) qv = fingers B = bend fingers F = thumb Find the direction of the force on a negative charge for each diagram shown. General Physics 2 Magnetism

General Physics 2 Magnetism

Think-Pair-Share Derive an expression for the radius of an e-’s orbit in a uniform B field. Express your answer in terms of me, v, qe, and B. Turn in your solution! Start of class 2 - students have already completed worksheets 1 & 2 General Physics 2 Magnetism

Earth’s Magnetic Field magnetic declination angular difference between geographic north and magnetic north varies with latitude General Physics 2 Magnetism

Practice Problems Magnetism: Worksheets 1 & 2 Finish before next class General Physics 2 Magnetism