Lec13 - Lecture 13 Lecture 13-1 Magnetic Field Permanent...

Info iconThis preview shows pages 1–4. Sign up to view the full content.

View Full Document Right Arrow Icon

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

View Full DocumentRight Arrow Icon

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

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

Unformatted text preview: Lecture 13 Lecture 13-1 Magnetic Field Permanent magnets: rocks from Magnesia, compass needle, bar magnet, No net charge no interactions withstationary charges Interactions-among themselves, N-S poles of the earth, with materials such as iron, nickle, tapes, disks, moving charges magnetism action at distance like E Define B by interaction with a moving charge q magnetic field Lecture 13 Lecture 13-2 Magnetic Field B Magnetic force acting on a moving charge q depends on q, v. F qvB = ca aca This defines B . direction by Right Hand Rule. B is a vector field ( ) / F N N B Ttesla qv Cms Am = = = = 1 T = 10 4 gauss (earth magnetic field at surface is about 0.5 gauss) Vary q and v in the presence of a given magnetic field and measure magnetic force F on the charge. Find: F v F qv ca a F varies sinusoidallyas direction of v is changed (q>0) vB aca If q<0 , sin F vBF qvB = ca aca Lecture 13 Lecture 13-3 Magnetic Force on a Current Consider a current-carrying wire in the...
View Full Document

Page1 / 11

Lec13 - Lecture 13 Lecture 13-1 Magnetic Field Permanent...

This preview shows document pages 1 - 4. Sign up to view the full document.

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