Electricity and Magnetism: Electromagnets Mr D. Patterson.

Slides:

Advertisements

Similar presentations

Interactions between Electricity and Magnetism Interactions between electricity and magnetism all involve some motion of either charges (electricity) or.

Advertisements

Electricity and Magnetism

How to Use This Presentation

Lecture Demos: E-40 Magnetic Fields of Permanent Magnets (6A-1) E-41 Oersted’s Experiment (6B-1) E-42 Force on a Moving Charge (6B-2) 6B-3 Magnetic Field.

Electromagnets April. Electricity vs. Magnetism ElectricityMagnetism + and -North and South Electric field, E caused by electric charges, stationary or.

The Magnetic Force and the Third Left Hand Rule

Electricity and Magnetism Electromagnetic Induction Mr D. Patterson.

Lecture 19-Wednesday March 11 Magnetic Forces on Moving Charges Mass Spectrometers.

James Clerk MaxwellMichael Faraday. What is magnetism?  …a phenomena in which certain materials exert attractive/repulsive forces on other materials.

Copyright © 2007, Pearson Education, Inc., Publishing as Pearson Addison-Wesley. Magnets and the magnetic field Electric currents create magnetic fields.

Physics Department, New York City College of Technology

Magnetism Any time electrical power is moving through a wire magnetism is created Any time magnetism moves past a wire electrical power is created.

Electromagnetism, etc. Q & A. Q#1 Q#2 Q#3 Q#4.

Magnetism Magnetic field- A magnet creates a magnetic field in its vicinity.

1 MAGNETIC FIELDS AND ELECTRIC CURRENT Electromagnetism: when an electric current flows through a wire a magnetic field is created.

Electricity and Magnetism Mr D. Patterson. Outcomes explain the torque produced by the force on a rectangular coil carrying a current in a magnetic field—this.

A basic property of the tiny particles that make up matter; it can be positive or negative: Some particles of matter have an electric charge. Electric.

Electromagnetism. Describes the magnetic field produced by a current-carrying wire (right- hand rule or left-hand rule) Names ways of modifying the intensity.

Electro-Magnetism © David Hoult Magnetic Field Shapes © David Hoult 2009.

Electromagnetic Induction Faraday’s Law. Induced Emf A magnet entering a wire causes current to move with in the wires I = Emf / R The induced current.

SPH4U – Grade 12 Physics Unit 1

A Powerful Attraction or A Class of Phenomena caused by Moving Electric Charges.

Conventional current: the charges flow from positive to negative electron flow: the charges move from negative to positive the “flow of electrons” Hand.

Physics 106 Lesson #20 Magnetism: Relay and Buzzer Dr. Andrew Tomasch 2405 Randall Lab

Interactions between Electricity and Magnetism Interactions between electricity and magnetism all involve some motion of either charges (electricity) or.

Interactions between Electricity and Magnetism Interactions between electricity and magnetism all involve some motion of either charges (electricity) or.

12.5 The Motor Principle p Magnetic Force on a Current-carrying Conductor Moving Conductors with Electricity: Magnetic Force on a Current-carrying.

Quick Practice In what direction is the magnetic force on the wire?

Lecture 23—Faraday’s Law Electromagnetic Induction AND Review of Right Hand Rules Monday, March 30.

Chapter 19 Table of Contents Section 1 Magnets and Magnetic Fields

Right Hand Thumb Rule Quick Review 1) How is a solenoid like a bar magnet? 2) Draw a diagram using correct symbols showing a current carrying.

Magnetism and magnetic forces. Current off coil Molecular magnets aligned randomly N S.

The earth is a giant magnet Magnetic field lines of force leave the north pole and enter the south pole. What is a magnetic field?

Magnets and the magnetic field Electric currents create magnetic fields Magnetic fields of wires, loops, and solenoids Magnetic forces on charges and currents.

 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

REVISION ELECTROMAGNETISM. ELECTROMAGNETIC SPECTRUM (EMS)

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

P3_Physicstatements. To experience the maximum force the wire needs to be Bar magnets are permanent magnets, they have 2 poles and they create magnetic.

Conductor in a Magnetic Field – The Motor Principle A magnet creates a magnetic field with separate field lines that flow in a specific direction An electric.

Magnetism CHAPTER 29 : Magnetic fields exert a force on moving charges. CHAPTER 30 : Moving charges (currents) create magnetic fields. CHAPTERS 31, 32:

SPH3U: Electricity Overview of Electromagnetism. Electricity & Magnetism Electricity and Magnetism are very closely related, since both are based on the.

Week 9 Presentation 1 Electromagnets 1. Learning Objectives: 1. Determine the magnitude and direction of the magnetic field strength generated by a straight.

1© Manhattan Press (H.K.) Ltd magnetic fields due to currents Long straight wire Circular coil Long solenoid.

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.

Magnetic Fields Starter questions

Current in a Magnetic Field – Learning Outcomes 1.

Magnetic Forces & Fields

Chapter 19 Preview Objectives Magnets Magnetic Domains Magnetic Fields

Moving Charges in Magnetic Fields

Electro-Magnetism © D Hoult 2008.

Review p. 76 #12 Electromagnetic Induction Topic 12.3/12.4.

Prepared by Dedra Demaree, Georgetown University

Knowledge Organiser – Magnetism and Electromagnetism

Electromagnetic Forces and Fields

Unit 9: Electromagnetism

Magnetism =due to moving electrical charges.

Electromagnetic Forces and Fields

Electromagnetism Continued

Electromagnetism It was observed in the 18th century that an electric current can deflect a compass needle the same way a magnetic field can, and a connection.

Magnetic Field Permanent magnet Charges in motion

Revision Quiz Bowl on Electromagnetism

Topic 12 –Magnetic fields

8.1 – Magnets and Electromagnets (pg )

Magnetic Field Permanent magnet Charges in motion

Magnetism Magnets have 2 poles – north pole and south pole.

Force on a Current-carrying Conductor & Motor Effect 

Draw 2 magnets that repel and attract each other.

Presentation transcript:

Electricity and Magnetism: Electromagnets Mr D. Patterson

Outcomes explain that magnetic fields are associated with moving charges, and draw the field due to a current flowing through a long straight wire, a short coil and a solenoid. describe and apply the concept of force on a current carrying conductor in a magnetic field, and describe the factors which affect the force on a current-carrying conductor in a magnetic field—this will include applying the relationship: for perpendicular cases

A flow of positive charges will create a circular magnetic field. The direction of the field can be determined by the “right hand rule”. If negative charges are the cause of the current, use your left hand instead. An Electric Current Causes a Magnetic Field

Notation for 3D magnetic fields

E.g. Coil of wire An Electric Current Causes a Magnetic Field

E.g. Solenoid An Electric Current Causes a Magnetic Field

Force on a current carrying wire A current will produce a magnetic field. The produced magnetic field will interact with external magnetic fields which will apply a force to the current carrying wire

Force on a current carrying wire The right hand rule can will indicate the direction that the wire will be pushed.

Force on a current carrying wire The magnitude of the force on a current carrying wire: F is force (N) I is current (A) l is length of wire in the field (m) B is magnetic flux density (T)

Example A 5.00 m power line carries a 88.0 A current running from east to west. The Earth’s magnetic flux density in this area is 5.00 x T. What is the force felt by the power line?

Example A 5.00 m power line carries a 88.0 A current running from east to west. The Earth’s magnetic flux density in this area is 5.00 x T. What is the force felt by the power line? What about if the current runs west to east?

Example A 5.00 m power line carries a 88.0 A current running from east to west. The Earth’s magnetic flux density in this area is 5.00 x T. What is the force felt by the power line? What about if the current runs north to south?