Magnetic Flux Density

what is always formed when a current is passed through a wire

a magnetic field

what do the field lines of an induced magnetic field form around the wire?

concentric rings

what is the unit and symbol for magnetic flux density

Tesla and B

define a ‘Tesla’

a force of 1N on 1m of wire carrying 1A of current perpendicular to a magnetic field

what is magnetic flux density?

a measure of strength of a field

when a current-carrying wire is placed parallel in a magnetic field, what force is being exerted on a wire and why?

no force is being exerted as there’s no perpendicular component of the force.

what formula can be used to find the force when the field is perpendicular to the current?

F=BIL (Force=Magnetic Flux Density*Current*length of wire)

when using Fleming’s left hand rule, what finger represents what and how would you arrange your hand to make it work?

what which pole to which does a magnetic field go?

from north to south