The motor effect is when a wire with a current is placed between two attracting magnetics, which causes the wire to have a force at a right angle
Flemings left hand rule to determine the direction of the motor effect
A) force
B) magnetic field
C) current
The catapult experiment
A) catapult
B) current
C) force
D) free wire
E) move
F) direction of movement
G) direction
H) current
I) moves
Magnetic flux density - the strength of the magnetic field
Equation for magnetic flux density:
Force = magnetic flux density x current x length of conductor
Magnetic flux density is measured in Teslas (T) and the symbol is B
The force on a wire is directly proportional to the strength of the magnetic field, the length of the conductor and the current
When a north and south pole is put in between a wire with flowing charge, the magnetic fields interact. This causes the wire to be pushed out of the magnetic field at a right angle. The more slanted the wire is, the less force it will experience
When using flemings left hand rule, we start by directing our finger at the magnetic field direction
DC Motors
A) coil
B) up
C) down
D) down
E) up
Every time the coil in a motor turns 180 degrees, the force acting on each side of the wire flips as the direction of current changes. This results in the direction always changing, and there never being a full 360 degree rotation
