We think you have liked this presentation. If you wish to download it, please recommend it to your friends in any social system. Share buttons are a little bit lower. Thank you!
Presentation is loading. Please wait.
Published byTheodora Veronica Atkins
Modified about 1 year ago
Magnetic force on currents N S I F N S I F P.62
Fleming’s left-hand rule P.62
Magnetic field becomes stronger on the top Magnetic field becomes smaller at the bottom Neutral point P.62
To have greater induced magnetic force: P.62 Increase current Stronger magnetic field
N S N S I
Conducting wire with a permanent magnet N S I F N S I F P.63
I I I I xxxx xxxxx xxxxx xxxxx x P.62 F F FF
I1I1 I2I2 x... x x F1F1
I1I1 I2I2 x... x x F2F2
I1I1 I2I2 x... x x F1F1
I1I1 I2I2 x... x x F2F2
Attractive forceRepulsive force
N S v F N S I v F
The rod moves to LHS.
P.64 The rod moves to RHS.
P.64 No current on metal rod. The rod remains at rest.
P.65 X : North, Y : South Out of the paper More magnetic field lines The force is reversed in direction No change in direction
0 00 Anticlockwise 0 00 Clockwise
D.c. motor F -F A couple is formed Commutator rotates with the coil P.67
Current flows from A to B P.67
Motor can be more powerful Use a stronger magnet Use larger current Increase number of turns per unit length of coil P.68 Use soft-iron core
x. x. F -F Couple is constant P.68
NS Several coils Soft-iron core Large number of turns of wire Increase power & run more smoothly x. x. x. P.68
Loudspeaker Sound wave P.68
Solenoid Paper cone Circular magnet P.68
S N N N N NN N N
© Boardworks Ltd 2003 Electromagnets Core Describe the pattern of the magnetic field due to currents in straight wires and in solenoids Describe applications.
The Direct Current (DC) Electric Motor What you need to know: -Electromagnetism - main parts of the motor -Flow of electricity through the motor - interaction.
Chapter 14 Magnetism. Properties of Magnets You can investigate the properties of magnets by bringing two magnets together. You can investigate the properties.
1 Magnetism Objectives 1. Explain how a magnet exerts a force on an object. 2. Describe the properties of temporary and permanent magnets. 3. Explain why.
Compared to the huge force that attracts an iron tack to a strong magnet, the force that the tack exerts on the magnet is 1. relatively small. 2. equally.
MAGNETIC EFFECTS OF ELECTRIC CURRENT. 1) Magnetic field and Field lines :- a) Magnetic field :- The region around a magnet where the force of attraction.
Do now! Can you stick the sheet in your book please?
24-1 MAGNETS: PERMANENT & TEMPORARY. General Properties Hang the bar magnet from the thread, observe what happens……. Positions itself in the N-S directions.
Lets Play Jeopardy!! TheCategoriesAre Vocabulary.
Magnetic Forces and Fields Objective: TSW understand and apply the concepts of a magnetic fields and forces by predicting the path of a charged particle.
PHYSICS UNIT 8: MAGNETISM. MAGNETISM Magnetic Fields are always dipolar: N and S poles law of magnetism: like poles repel, unlike poles attract magnetic.
AP Phys B Test Review Electrostatics, Circuits, and Magnetism 4/29/2008.
Magnets and Electricity Write-On Grade 5. Learner Expectations Content Standard: 14.0 Energy The student will investigate energy and its uses. Learning.
Magnetic Fields Due To Currents Law of Biot and Savart Magnetic Field due to a Long Straight Wire Magnetic Field due to a Circular Arc of Wire Force Between.
Electricity. All of us agree the importance of electricity in our daily lives. But what is electricity?
10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt 10 pt 15 pt 20 pt 25 pt 5 pt.
Safety / Intro The mains supply and batteries are sources of Electrical Energy Electrical Appliances are Energy Changers.
1 Electromagnetic Induction. 2 Practical and predict direction of the I induced.
2 pt 3 pt 4 pt 5pt 1 pt 2 pt 3 pt 4 pt 5 pt 1 pt 2pt 3 pt 4pt 5 pt 1pt 2pt 3 pt 4 pt 5 pt 1 pt 2 pt 3 pt 4pt 5 pt 1pt Faraday Generators/ Motors Induced.
Applications of Electromagnetism. Electromagnetic Waves.
Using Electricity and Magnetism - What Is Electromagnetism? Electric Current and Magnetism An electric current produces a magnetic field.
Fields and forces Topic 6.3: Magnetic force and field.
Electromagnetic Induction Objective: TSW understand and apply the concept of magnetic flux in order to explain how induced emfs are created and calculate.
Electricity and Magnetism SPS10. Students will investigate the properties of electricity and magnetism. a.Investigate static electricity in terms of: friction,
PS – TEST 10 8 TH GRADE SCIENCE. 1.MORE THAN 2000 YEARS AGO GREEKS DISCOVERED DEPOSITS OF A MINERAL THAT WAS A NATURAL MAGNET CALLED _______.
IB Physics 12 Mr. Jean December 9 th, The plan: Video clip of the day AC Motors DC & AC generators Transformers.
5.3 Magnetism IB Physics. Magnets and magnetic fields Draw the pattern of magnetic field lines of an isolated bar magnet Draw the magnetic.
Unit 1 Lesson 5: What Makes an Electromagnet?. Objective By the end of this lesson you should know what an electromagnet is and how to make one.
ConcepTest 20.1a Magnetic Force I 1) out of the page 2) into the page 3) downwards 4) to the right 5) to the left A positive charge enters a uniform magnetic.
Interactions between Electricity and Magnetism Interactions between electricity and magnetism all involve some motion of either charges (electricity) or.
© 2016 SlidePlayer.com Inc. All rights reserved.