Electromagnets
To make an electromagnet
-Wire
-Current
To make an electromagnet stronger
-more turns of the wire
-more current
-magnetizeable core
Electromagnets have poles too.
Poles can be reversed by changing the direction of
the current
Current from ElectricityMoving a magnet in a coil of wire produces a
current
***A changing magnetic field creates a voltage
which causes a current in a wire****
Mechanical Energy converted to Electrical –
Generator
Electrical to Mechanical – Motor
DC motor uses commutator plates and brushes to
allow electromagnet poles to switch every half turn