Magnetism And Electromagnetism Flashcards
Is magnetism a fundamental force?
Yes
What type of force is magnetism: contact or non contact?
non contact
What are the two motions a magnet can do?
Attract and repel
What are the 4 magnetic metals?
Iron(steel), cobalt, nickel, neodymium
How does a magnetic material become a induced one
Being physically attached to a permanent one
what is a temporary magnet called?
an induced magnet
what is the region around a magnet called?
magnetic field
in which direction do the arrows on a magnetic field point to and from
from north to south
where is a magnet the strongest?
at the poles
what can be used to plot a magnetic field?
a plotting compass
what is the direction of the right hand grip rule?
the direction the fingers curl into your hand
which direction do the arrows point in the solenoid diagram?
down
what are 2 ways to make the magnetic field of a solenoid stronger?
increasing the number of “turns” of the wire or increasing the current
reversing the current in a solenoid also reverses what?
the poles
give 3 uses of electromagnets?
locks
bells
moving junk at a scrapyard
mri scanners
what shows a magnetic field being weak?
the lines being far apart
how can a force be created on a wire using magnets?
magnetic field of a current carrying wire interact with a magnetic field
what does the first finger resemble in the left hand grip rule?
field
what does the thumb resemble in the left hand grip rule?
thrust or motion
what does the second finger resemble in the left hand grip rule?
current
the current and the field must not be _____ to each other
parallel
what happens to the direction of the force if you reverse the direction of the current of the field
the force reverses
what is magnetic field strength measured in?
Tesla(T)
give 2 advantages if electromagnets?
it can be turned on and off
the strength can be increased of decreased
