Register to reply

Area perpendicular to a magnetic field from Faradays Law

by jearls74
Tags: faradays, field, magnetic, perpendicular
Share this thread:
jearls74
#1
Dec25-12, 06:59 PM
P: 52
Hello Everyone,

I have a question concerning the "Area perpendicular to the magnetic field".

If the field was produced by a permanent magnet, would the "Area perpendicular to

the magnetic field" be the same size as the Area of the permanent magnet?
Phys.Org News Partner Engineering news on Phys.org
Tiny UAVs and hummingbirds are put to test
Britain to trial driverless cars from 2015
NIST corrosion lab tests suggest need for underground gas tank retrofits
berkeman
#2
Dec25-12, 07:22 PM
Mentor
berkeman's Avatar
P: 40,730
Quote Quote by jearls74 View Post
Hello Everyone,

I have a question concerning the "Area perpendicular to the magnetic field".

If the field was produced by a permanent magnet, would the "Area perpendicular to

the magnetic field" be the same size as the Area of the permanent magnet?
The area can be anything you want. It just depends on what you are trying to find. Can you provide more context to your question?
jearls74
#3
Dec25-12, 07:55 PM
P: 52
When calculating voltage for an axial flux generator with a permanent magnet rotor,

would the "Area perpendicular to the magnetic field" be the Area that the wire in the stator

occupies, or would the "Area perpendicular to the magnetic field" be the same size as the

Area of the permanent magnet? I believe the " Area perpendicular to the magnetic field" is

is Area of the permanent magnet that the field is coming from and not the Area of the stator

that the wire occupies but i need someone that knows more about Faradays Law to tell me

if im right or not?

dlgoff
#4
Dec26-12, 11:49 AM
Sci Advisor
PF Gold
dlgoff's Avatar
P: 2,704
Area perpendicular to a magnetic field from Faradays Law

Check out this Faraday's Law explanation.

jim hardy
#5
Dec26-12, 12:09 PM
Sci Advisor
PF Gold
jim hardy's Avatar
P: 3,519
Nice job Don !!! Great link, and scholarly....

The voltage is determined by the magnetic flux enclosed by your turns.... Well,,, Actually by rate of change of that flux....
Probably there's several different ways to calculate that.

@ original poster:
Brush up on your magnetic units.
One weber per second will cause one volt in one turn whatever its area. You'll have to adapt that to whatever geometry and units you are given.


old jim


Register to reply

Related Discussions
Why do magnetic fields only apply force to charges moving perpendicular to the field? Introductory Physics Homework 1
Magnetic field created in a perpendicular point Introductory Physics Homework 0
Why is electromagnetic force perpendicular to magnetic field? Classical Physics 0
Magnetism - Circular Loop in a Perpendicular Magnetic Field Introductory Physics Homework 2
Why the charged particles flow perpendicular to the magnetic field? Advanced Physics Homework 1