Notes on Chapter 28 - Chapter 28 -Magnetic Fields 28-1 What...

Info iconThis preview shows pages 1–6. Sign up to view the full content.

View Full Document Right Arrow Icon
1 July 2010 1 Chapter 28 -Magnetic Fields Applications of magnetic fields and magnetic forces are countless: Magnetic recording of music and video images Control of CD and DVD players and computer hard drives Drive for speaker cones in headphones, TV’s, computers, and telephones Security alarm systems, doorbells, and automatic door latches Etc 28-1 What is Physics?
Background image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 July 2010 2 What Produces a Magnetic Field? Electric fields are caused by electric charges Magnetic fields are caused by [ ????? ] There are no magnetic charges (or magnetic monopoles ) Two ways of producing magnetic fields are shown below: Bar magnet Electromagnet The earth is a huge bar magnet 28-2
Background image of page 2
1 July 2010 3 The Definition of B Electric Field: E F E q = Magnetic Field | : | x | | sin B B B F B qv F qv B F q vB φ = = =  Defined in terms of the electric force on a test charged particle at rest Defined in terms of the magnetic force exerted on a moving charged test particle 28-3
Background image of page 3

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
1 July 2010 4 Magnetic Force on a Charged Particle Right-hand Rule positive q negative q The force acting on a charged particle moving with velocity through a magnetic field is always perpendicular to and B F v B v B
Background image of page 4
1 July 2010 5 Motion of three charged particles in a magnetic field directed out of the plane of the figure ee γ −+ = +
Background image of page 5

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full DocumentRight Arrow Icon
Image of page 6
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 09/30/2010 for the course PHYS MTH 203 taught by Professor None during the Spring '10 term at American University of Sharjah.

Page1 / 18

Notes on Chapter 28 - Chapter 28 -Magnetic Fields 28-1 What...

This preview shows document pages 1 - 6. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online