the motor effect and flhr Flashcards
what happens when a current passes through a wire?
a magnetic field is produced
what is motor effect?
when we place a current-carrying wire in another magnetic field
magnetic field around wire interacts with magnetic field between magnets
wire experiences a force which causes wire to move
how can we calculate size of force acting on wire in motor effect?
f = bil
what is magnetic flux density?
a measure of how strong magnetic field is
what are the 3 factors that affect size of force?
magnetic flux density
current
length of wire
how can we use flhr to determine direction of force?
place first finger in direction of magnetic field N->S
second finger in direction of current (+ to -)
direction thumb is pointing in is direction of force
what happens if conductor is parallel to magnetic field?
it won’t experience a force
