Magnetic Force Introduction Magnetic force on moving charge Examples Magnetic deflection animation x and o diagrams More examples Magnetic force on current-carrying.

Slides:

Advertisements

Similar presentations

Do now! Can you stick the sheet in your book please?

Advertisements

Lecture 8 Examples of Magnetic Fields Chapter 19.7  Outline Long Wire and Ampere’s Law Two Parallel Contours Solenoid.

Chapter 20 Magnetism.

Magnetism. Observe: SNSN Attract or repel? Observe: SNSN Attract or repel?

In 1820 Hans Oersted discovered how magnetism and electricity are connected. A unit of measure of magnetic field strength, the oersted, is named after.

Faraday Induction Animation – Faraday induction

Magnetism and Electromagnetic Induction

Magnetic Domains – Randomly Oriented ~ atoms in each domain.

21.2 Electromagnetism In 1820 Hans Oersted discovered how magnetism and electricity are ______________. A unit of measure of magnetic field strength, the.

Physics 152 Magnetism Walker, Chapter B Field Outside a Wire Earlier we said that magnetic fields are created by moving charges. A current in a.

The Magnetic Field The force on a charge q moving with a velocity The magnitude of the force.

Electromagnetic Induction. Currents Create Magnetic Fields 1820 Hans Christian Oersted found that magnetism was produced by current-carrying wires.

Basics in Magnetism Electromagnetism Force on a Current-Carrying Wire EM Induction Transformer Generators Electric Motors ELECTROMAGNETISM.

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

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

 Electricity and magnetism are different aspects of a single force: electromagnetism  Electricity = result of charged particles  Magnetism = result.

Don’t forget your project is due soon Project due on Friday March. Individually, students are to make an informational brochure explaining how electricity.

The Right Hand Rule simply explained By Mr Yeh. “I gotta hand it to ya.” The hand rule is a convenient way to remember directional issues with flow in.

Ch20 Magnetism Durable.

Magnetism Physical Science. What is a magnet?  2000 years ago the Greeks discovered a mineral that attracted things made of iron.  They named this mineral.

Physics A First Course Electricity and Magnetism Chapter 17.

Electricity and Magnetism

The force on a current-carrying wire A magnetic field exerts a force on a single moving charge, so it's not surprising that it exerts a force on a current-carrying.

Physics of Magnetism PA STEM monthly meeting Lincoln HS, Philadelphia January 13, 2015.

B due to a moving point charge where  0 = 4  x10 -7 T.m/A Biot-Savart law: B due to a current element B on the axis of a current loop B inside a solenoid.

Electromagnetism.

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

Chapter 19 (part 2) Magnetism. Hans Christian Oersted 1777 – 1851 Best known for observing that a compass needle deflects when placed near a wire carrying.

Magnetic Fields – Long Straight Wire A current-carrying wire produces a magnetic field A current-carrying wire produces a magnetic field The compass needle.

Motors Noadswood Science, Motors To know how motors function and Fleming’s left hand rule Wednesday, October 21, 2015.

Board Work What are the directions of the forces on the opposite charges moving with velocity v through magnetic field B? B v +−

Magnetic Fields Gauss’s Law vs. Ampere’s Law Ampere’s Law Ampere’s Law for long straight wire Examples Magnetic properties of materials Force between 2.

Magnetic Forces. * Current-carrying wires have magnetic fields and… * Magnets exert forces on other magnets. Therefore… Magnets exert forces on current-carrying.

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

Chapter 20 Electromagnetic Induction. Electricity and magnetism Generators, motors, and transformers.

P.Sci. Unit 6 cont. Ch. 21 Magnetism.

Creating Magnetic Fields Text: Ch. 20 M. Blachly, AP Physics.

Principles of Physics Magnetism and Electricity. 3 Dimensional Directions Right Left Up Down Into Out of page page xxxxx.

Physics Sources of the Magnetic Field 30.1 Biot-Savart Law 30.2 Force between two parallel wires 30.3 Ampere’s Law 30.4 Magnetic Field (B) of.

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

Essential Idea:  The effect scientists call magnetism arises when one charge moves in the vicinity of another moving charge.

IB Assessment Statements  Topic 6-3, Magnetic Force and Field State that moving charges give rise to magnetic fields Draw magnetic field.

Physics 102: Lecture 10, Slide 1 Faraday’s Law Physics 102: Lecture 10 Changing Magnetic Fields create Electric Fields Exam 1 tonight Be sure to bring.

Firdiana Sanjaya Ana Alina

ELE1001: Basic Electrical Technology

Chapter 21.  Electromagnetic induction is the process of generating a current by moving an electrical conductor relative to a magnetic field.  This.

Electromagnetism It’s attractive! (or repulsive).

Welcome Scientists Today: Complete Building a Motor Activity Motors Vs. Generators Electricity and Magnetism Mind-Map.

Ph126 Spring 2008 Lecture #8 Magnetic Fields Produced by Moving Charges Prof. Gregory Tarl é

Magnetism. Magnets and Magnetic Fields Magnets have two ends – poles – called north and south. Like poles repel; unlike poles attract.

Electromagnetism. We found out earlier that electric charges produce electric force fields.

Magnetism and Electromagnetic Induction PHYSICS 1-2 MR. CHUMBLEY CHAPTER 19: MAGNETISM CHAPTER 20: ELECTROMAGNETIC INDUCTION.

Electromagnetism.  A moving charge creates a magnetic field  Electric current (I) is moving electrons, so a current-carrying wire creates a magnetic.

Unit G485: Fields, Particles and Frontiers of Physics Revision.

MAGNETISM! Who doesn’t think magnets are cool?. MAGNETIC FIELD Understand the concept of a magnetic field – Is it like an electric field? – What produces.

1. Magnetic Effect of a Current Remember the electromagnet - a soft-iron bar can be magnetised by putting it in a current carrying solenoid. This is an.

To make an electromagnet stronger

Electromagnetic induction And you. When you move a magnet in a solenoid, what happens? Solenoid/magnet demo here Look closely, and describe what you see.

Electromagnetic Induction and Faraday’s Law Chapter 21.

Lesson 5 More Magnetism and Current Liceo Alfano.

Principles of Electromechanics Electricity  Motion Electricity  Motion: Motor Motion  Electricity: Generator  Magnetic Field & Faraday’s Law.

Electromagnetism Continued

Magnetic Fields Gauss’s Law vs. Ampere’s Law Ampere’s Law

In 1820 Hans Oersted discovered how magnetism and electricity are connected. A unit of measure of magnetic field strength, the oersted, is named after.

Charging by Magnetism Since you can create a magnetic field by running electricity through a wire, can you create electricity using a magnetic field?

In 1820 Hans Oersted discovered how magnetism and electricity are connected. A unit of measure of magnetic field strength, the oersted, is named after.

Presentation transcript:

Magnetic Force Introduction Magnetic force on moving charge Examples Magnetic deflection animation x and o diagrams More examples Magnetic force on current-carrying wire Still more examples

Magnetism and Induction Magnetism is weird. It’s like a correction to electric forces when charges are moving, and corrections are always weird. – Electric affects charges, magnetism affects charges in motion – Electric causes linear accelerations, magnetism causes sideways deflections (RH rule) Magnetism is very, very (societally) important! – Motors, generators, loudspeakers, credit cards, hard drives, transformers…….

Magnetic Force on moving charge

Right-hand rule Hand in direction of v Bend in direction B Thumb points in direction of F Alternative right hand rules

Example - Magnetic Force on moving charge

Example 2 - Magnetic Force on moving charge F v

Magnetic force video mp4 video

X’s and O’s Simplify diagrams – B field out of or into plane of paper B coming out B going in (+) deflects to right (-) deflects to right

Circular motion in magnetic field

Examples – Force on Moving Charge Problem 11 – Direction of force Problem 12 – Direction of field

More examples – Force on Moving Charge

Magnetic Deflection

Magnetic Deflection

Force on Current-carrying wire

Summary – 2 magnetic force laws

Example 20-1

Example 20-2

Problem 7

Magnetron - Microwave ovens

Magnetron - Details Magnets top and bottom

Magnetron - History Amazon.com Tuxedo Park : A Wall Street Tycoon and the Secret Palace of Science That Changed the Course of World War II Paperback – May 6, 2003 by Jennet Conant (Author)Jennet Conant The untold story of an eccentric Wall Street tycoon and the circle of scientific geniuses he assembled before World War II to develop the science for radar and the atomic bomb. Together they changed the course of history. helped defend Britain from the Blitz! Could now put radar in planes!

Magnetism and Induction Flowchart lawchangefieldCurrentforcedirectexamples Force Law 1B →qv →F = qv x BRHR 1charge deflection picture tube Force Law 2B →i →F = il x BRHR 12 wires, motor, loudspeaker Ampere’s Law B = μ o i/2πr← iRHR 2electromagnet solenoid Faraday Induction d/dt →Φ = B*A →ε = dΦ/dt i = ε/R Lentzgenerator transformer Magnetic field plus moving charge/current creates force