electromagnetism Flashcards
on a straight, current carrying wire, there are what shape magnetic fields
circular around the wire
what is a solenoid
a single long coil of wire
the increase the strength of a magnetic field of a current carrying solenoid you can (4)
add an iron core
increase current
use a larger solenoid
use a less resistant material
how does a solenoid turn into an electromagnet
when current is added and there is a soft iron core
electrons flow from negative to positive or positive to negative
negative to positive
what is the motor effect
When a wire with current flowing through it is placed in a magnetic field and experiences a force
a wire carrying current is also referred to as a
current carrying conductor
when a wire is placed into a magnetic field, it experiences what which causes it to __?
a force, causing it to move
how do you figure out direction of current
flemings left hand rule
