• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Pdf - Text of NPTEL IIT Video Lectures
Pdf - Text of NPTEL IIT Video Lectures

Magnetic Magic Teacher Resource Guide
Magnetic Magic Teacher Resource Guide

... Title: Playing with Magnets Author: Gary Gibson Publisher: Cooper Beech Books ISBN#: 1562946331 Description: Hands-on experiments are described in detail to help clarify the understanding of the basics of magnets. It is intended for students in Grades 1 to 3. Title: Science Book of Magnets Author: ...
lecture1423813661
lecture1423813661

File
File

Lecture 4
Lecture 4

Lecture 3 Gauss`s Law Ch. 23
Lecture 3 Gauss`s Law Ch. 23

... The electric field inside a conductor is 0. The total net charge inside a conductor is 0. It resides on the surface. Find electric field just outside the surface of a conductor. Find electric field around two parallel flat conducting planes. Find electric field of a large non-conducting sheet of cha ...
Conceptual Physical Science 5e — Chapter 9
Conceptual Physical Science 5e — Chapter 9

... very different devices with different applications. forms of transformers. energy sources. Explanation: The main difference in a motor and generator is energy input and output, which are opposite for each. ...
Ch. 15: Electric Forces and Electric Fields
Ch. 15: Electric Forces and Electric Fields

PowerPoint Presentation - Lecture 1 Electric Charge*
PowerPoint Presentation - Lecture 1 Electric Charge*

Electric potential energy
Electric potential energy

... Electric flux is positive (negative) where the electric field points out (into) of the surface Electric field lines can begin or end inside a region of space only when there is charge in that region Phys272 - Fall 14 - von Doetinchem - 130 ...
Use of the perfect electric conductor boundary
Use of the perfect electric conductor boundary

... PACS: 03.50.De; 02.70.Bf; 41.20.Jb; 07.05.Tp; 84.40.Ba ...
Faraday and the Electromagnetic Theory of Light
Faraday and the Electromagnetic Theory of Light

E - Purdue Physics
E - Purdue Physics

Section 5
Section 5

Physics 227: Lecture 4 Applications of Gauss`s Law
Physics 227: Lecture 4 Applications of Gauss`s Law

... • Φ = q/ε0 = σA/ε0 • ➮ E = σ/ε0 • This is a factor of 2 larger than for a plane of charge, because all the field is to one side. Thursday, September 15, 2011 ...
Physics 121 Fall 2002
Physics 121 Fall 2002

R-Electrostatics-Unit
R-Electrostatics-Unit

... connections between electricity and magnetism as observed in electromagnets, motors and generators. In this course, the details of electrical and magnetic forces and energy are further explored and can be used as further examples of energy and forces affecting motion. • Charging Objects (friction, c ...
2731-AQA Physics P3.3 SoW Keeping things moving
2731-AQA Physics P3.3 SoW Keeping things moving

... make things move. This is called the motor effect and is how appliances such as the electric motor create movement. Our ability to exploit the motor effect of electricity has allowed us to develop into the technological society of the 21st Century. Many appliances do not use 230 volts mains electric ...
electrical machines elec
electrical machines elec

Electro-magnetism
Electro-magnetism

... a. Hold each end of the nail near the compass. Does it have north and south poles? Draw a picture of the compass and nail. b. Momentarily connect the battery to the electromagnet and hold each end near the compass. Note which way the coil is wound, which way the battery is connected, and which end o ...
3.5.4 Swain Meters - Cathodic Protection Co Ltd
3.5.4 Swain Meters - Cathodic Protection Co Ltd

Grade4 Making an Electromagnet TLC2010
Grade4 Making an Electromagnet TLC2010

Materials Needed for the Lesson - Lake Science Collaborative
Materials Needed for the Lesson - Lake Science Collaborative

How transformers work
How transformers work

Effect of Electromagnetic Fields on Structure and Pollen Grains Development...  Chenopodium Album L. Leila Amjad
Effect of Electromagnetic Fields on Structure and Pollen Grains Development... Chenopodium Album L. Leila Amjad

< 1 ... 9 10 11 12 13 14 15 16 17 ... 118 >

Eddy current

Eddy currents (also called Foucault currents) are circular electric currents induced within conductors by a changing magnetic field in the conductor, due to Faraday's law of induction. Eddy currents flow in closed loops within conductors, in planes perpendicular to the magnetic field. They can be induced within nearby stationary conductors by a time-varying magnetic field created by an AC electromagnet or transformer, for example, or by relative motion between a magnet and a nearby conductor. The magnitude of the current in a given loop is proportional to the strength of the magnetic field, the area of the loop, and the rate of change of flux, and inversely proportional to the resistivity of the material.By Lenz's law, an eddy current creates a magnetic field that opposes the magnetic field that created it, and thus eddy currents react back on the source of the magnetic field. For example, a nearby conductive surface will exert a drag force on a moving magnet that opposes its motion, due to eddy currents induced in the surface by the moving magnetic field. This effect is employed in eddy current brakes which are used to stop rotating power tools quickly when they are turned off. The current flowing through the resistance of the conductor also dissipates energy as heat in the material. Thus eddy currents are a source of energy loss in alternating current (AC) inductors, transformers, electric motors and generators, and other AC machinery, requiring special construction such as laminated magnetic cores to minimize them. Eddy currents are also used to heat objects in induction heating furnaces and equipment, and to detect cracks and flaws in metal parts using eddy-current testing instruments.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report