extra Flashcards
1
Q
magnetic field
A
a current flows through a conducting wire
strength depends on the current through the wire and the distance from the wire
2
Q
electromagnet
A
solenoid with an
iron core
magnetic
field inside is strong and uniform.
3
Q
motor effect
A
a conductor carrying a current is placed in a magnetic field
the magnet producing the field and the conductor exert a force on each other
4
Q
flemming’s left hand rule
A
thumb is direction
second is field
third is current
5
Q
force
A
magnetic flux density (tesla) x current x length
6
Q
factors that affect size of force is
A
current
strength of magnet
angle between wire and magnet lines(greatest when perpendicular, 0 when parallel)