- #1
Suy
- 101
- 0
Homework Statement
I am really confused, and why magnetic field is created in a current,
electron or the wire create the field?
ty, any help would be appreciated
Suy said:also can you teachme how to do this question,
an electron is traveling north through a magnetic field that is vertically upward. in what direction will the magnetic force be?
for this question , if i use left hand rule, how is it possible to move the thumb and and finger both north(upward?)
ty!
Suy said:but my teacher said we use left hand rule, in Calgary
i am not sure, in the textbook, it said use left hand for electron, and right hand for positive
The page is the surface upon which the picture you're viewing is drawn.Suy said:but where is the page in magnetic field? between two magnet?
Suy said:can you tell me the answer and i will figure it out, because i don't know much about that equation yet...
ty !
Suy said:but my teacher said we use left hand rule, in Calgary
i am not sure, in the textbook, it said use left hand for electron, and right hand for positive
this one ?
berkeman said:The answer to which question? We don't tell you answers to your homework problems, but we can try to answer specific questions about things that you are confused about.
Like, look at the 3rd figure down in this wiki article:
http://en.wikipedia.org/wiki/Right_hand_rule
It shows you how the magnetic B field circulates around a current-carrying wire. Does that help?
In a magnetic field, out of the page and into the page refer to the direction of the magnetic field lines. If the field lines are pointing out of the page, it means the field is directed away from the surface, and if they are pointing into the page, it means the field is directed towards the surface.
The direction of the magnetic field can be determined using the right-hand rule. If you point your thumb in the direction of the current, your fingers will curl in the direction of the magnetic field.
Some common examples of magnetic fields in everyday life include the Earth's magnetic field, which helps compasses determine direction, and the magnetic fields produced by electric motors and generators.
A magnetic field is created by moving electric charges, while an electric field is created by stationary electric charges. Additionally, magnetic fields can only exert forces on moving charges, while electric fields can exert forces on both moving and stationary charges.
Magnetic fields are used in a variety of technologies, including electric motors, generators, MRI machines, and magnetic storage devices like hard drives. They are also used in particle accelerators and in the production of electricity through power plants.