ELECTRICITY AND MAGNETISM
BY: N. BAJAJ
BAR MAGNET: MAGNETIC FIELD LINES
TWO MAGNETS: LIKE POLES
TWO MAGNETS: UNLIKE POLES
RIGHT HAND RULE: STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
STRAIGHT CONDUCTOR
COILED CONDUCTOR
COILED CONDUCTOR
COILED CONDUCTOR
APPLICATIONS OF ELECTROMAGNETS:
LIFTING MAGNET
http://www.youtube.com/watch?v=b6MVPYG
veeQ&feature=related
APPLICATIONS OF ELECTROMAGNETS:
ELECTRIC BELL
http://www.youtube.com/watch?v=P96XG4Pa4OY
APPLICATIONS OF ELECTROMAGNETS:
RELAY
APPLICATIONS OF ELECTROMAGNETS: RELAY
•In this figure, you can see that a relay
consists of two separate and completely
independent circuits.
•The first is at the bottom and drives the
electromagnet. In this circuit, a switch is
controlling power to the electromagnet.
•When the switch is on, the electromagnet is
on, and it attracts the armature (blue).
•The armature is acting as a switch in the
second circuit.
•When the electromagnet is energized, the
armature completes the second circuit and
the light is on.
•When the electromagnet is not energized,
the spring pulls the armature away and the
circuit is not complete. In that case, the light
is dark.
RELAY: PRACTICE
ELECTRIC BELL:
PRACTICE
TWO CURRENT CARRYING STRAIGHT CONDUCTORS
TWO CURRENT CARRYING STRAIGHT CONDUCTORS:
CURRENT IN OPPOSITE DIRECTION (SERIES)
Clip
http://ocw.mit.edu/ans7870/8/8.02T/f04/visualizations/m
agnetostatics/14-SeriesWires/14-Series_320.html
TWO CURRENT CARRYING RING CONDUCTORS:
CURRENT IN OPPOSITE DIRECTION (SERIES)
CLIP
http://ocw.mit.edu/ans7870/8/8.02T/f04/visualizations/magnetostatic
s/16-MagneticForceRepel/16-MagForceRepel_f65_320.html
TWO CURRENT CARRYING STRAIGHT CONDUCTORS:
CURRENT IN SAME DIRECTION (PARALLEL)
Clip
http://ocw.mit.edu/ans7870/8/8.02T/f04/visualizations/magne
tostatics/13-ParallelWires/13-Parallel_Wires_320_f185.html
TWO CURRENT CARRYING RING CONDUCTORS:
CURRENT IN SAME DIRECTION (PARALLEL)
CLIP
http://ocw.mit.edu/ans7870/8/8.02T/f04/visualizations/magneto
statics/15-MagneticForceAttract/15-MagForceAtt_f65_320.html
TWO CURRENT CARRYING STRAIGHT CONDUCTORS
TWO CURRENT CARRYING STRAIGHT CONDUCTORS
THE MOTOR PRINCIPLE
THE MOTOR PRINCIPLE
THE MOTOR PRINCIPLE
THE MOTOR PRINCIPLE
THE MOTOR PRINCIPLE:
RIGHT HAND RULE 3
ELECTRIC MOTOR
ELECTRIC MOTOR: PRACTICE
ELECTRIC MOTOR: PRACTICE
LENZ’S LAW
LENZ’S LAW
LENZ’S LAW
LENZ’S LAW