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 byAlison Carroll
Modified over 4 years ago
Basics in Magnetism Electromagnetism Force on a Current-Carrying Wire EM Induction Transformer Generators Electric Motors ELECTROMAGNETISM
What happens when you move a magnet into a coil of wire? Michael Faraday EM Induction Changing magnetic field can produce electricity!
How is a changing magnetic field produced? Using AC source Moving magnet in a coil of wire Moving wire in a magnetic field
What factors affect the emf produced? The number of loops The speed of the magnet The size of the coil of wire More turns, greater emf Faster, greater emf Greater size, greater emf
What factors affect the emf produced? The polarity of magnet Direction of motion Strength of Magnet Changes direction Greater strength, greater emf
The AC Generator Top view Allows contact with the rings while allowing them to slip past Prevents the wires from twisting
The AC Generator
Causes changing magnetic field Makes the field stronger Emf is induced in the coils
The Transformer V s > V p Step down transformer V s < V p Charging electronic gadgets Step up transformer Power transmission
Power Transmission There is less current at high voltage. Power loss is lower at high voltage.
Applications of Electromagnetism
-Generators -Motors -Eddy Currents -Maxwell’s Four Equations AP Physics C Mrs. Coyle.
Basics in Magnetism Electromagnetism Force on a Current-Carrying Wire EM Induction Transformer Generators Electric Motors ELECTROMAGNETISM.
Motion Current: Generating Electricity (Faraday’s law)
Electromagnetism Physics 100 Chapt 15 Michael Faraday.
Magnetic Field Basic Concepts: A current carrying wire produces a magnetic field in the area around it. A time changing magnetic field induces a voltage.
Electromagnetic Induction. Currents Create Magnetic Fields 1820 Hans Christian Oersted found that magnetism was produced by current-carrying wires.
Grade 10 Multiple Choice Questions Click here to start the presentation Click here to start the presentation.
Electromagnetism, etc. Q & A. Q#1 Q#2 Q#3 Q#4.
Electromagnetic Induction Can a magnet produce electricity?
Inductors. Inductance Electrons in motion create electromagnetic fields – Recall from previous section that electrons in motion also create an electrostatic.
Eleanor Roosevelt High School Chin-Sung Lin Lesson 21.
Electricity and magnetism are different aspects of a single force: electromagnetism Electricity = result of charged particles Magnetism = result.
Physics A First Course Electricity and Magnetism Chapter 17.
6.11 Vocabulary Electromagnet: type of magnet in which the magnetic field is produced by a flow of electric current Core: metal (iron) center of an electromagnet.
Electromagnetism By Bao Tran. Electromagnetic induction Electromagnetic induction is a process in which a conductor cuts through a stationary magnetic.
Generators To explain how a generator works to produce electric current. To explain the difference between alternating and direct current.
Three-Phase AC machines Introduction to Motors and Generators Resource 1.
ELECTROMAGNETISM. ELECTROMAGNETISM ????? ELECTROMAGNETISM THE BRANCH OF PHYSICS THAT DEALS WITH THE RELATIONSHIP BETWEEN ELECTRICITY & MAGNETISM.
© 2019 SlidePlayer.com Inc. All rights reserved.