1. II. Uses of Magnetic Fields (p.628-632) Electromagnet Speaker Motor
Ch Magnetism
II. Uses of Magnetic Fields
(p )
Electromagnet
Speaker
Motor 1

2. A. Electromagnet Electromagnet
strong, temporary magnet formed when current is passed through a coil of wire surrounding an iron core
acts like a bar magnet when current is on

3. B. Speaker Speaker electrical energy  mechanical energy
wire coil moves back & forth as its magnetic field interacts with the field of a fixed magnet
forced vibration causes the cone to move  sound

4. C. Motor Motor electrical energy  mechanical energy
electromagnet rotates between the poles of a fixed magnet
commutator reverses the poles of the e’magnet

5. brushes & wires to battery
C. Motor
assembled motor
armature & commutator
field magnet
brushes & wires to battery