Transcript Electricity, Magnetism, and Motion

Electricity & Magnetism
at Work
Electricity, Magnetism, & Motion
Chapter 3
Section 1
Energy
• The ability to move an object some
distance
Electrical Energy
• Energy associated with electric currents
Mechanical Energy
• The energy an object has do to its
movement or position
Converting
Electrical  Mechanical
• When a currentcarrying wire is
placed in a magnetic
field, electrical energy
is turned into
mechanical energy
Electric Motors
• Uses electric current to
turn an axle
– Electrical  Mechanical
• Fans
• Blenders
Parts of a Motor
• Commutator
• Reverses the flow of
current through an
electric motor
Parts of a Motor
• Brushes
• Creates the two
contact points with
the commutator
Parts of a Motor
• Armature
• Dozens or hundreds
of loops of wire
wrapped around an
iron core