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Electromagnetic induction (the Dynamic effect (Z sensors (an electrical…
Electromagnetic induction
electromagnetic induction
- the creation of a
voltage
(or current) in a wire which is experiencing a change in
magnetic field
increase strength of magnet to get bigger voltage
increase sped of movement to get bigger voltage
increase the number of turns in the coil to get bigger voltage
the Dynamic effect
Using
electromagnetic induction
to transform
kinetic energy
into
electrical energy
is called the
dynamic effect
Z sensors
an electrical conductor moves through the magnetic field
the magnetic field through an electrical conductor changes
you can test this by connecting an ammeter to a conductor and moving the conductor through a magnetic field
the ammeter will show the magnitude and direction of the induced current
AC generators
how it works
Generators rotate a coil in a magnetic field
their construction is pretty much like a motor
As the coil spins, a current is induced in the coil. this current changes direction every half turn
this means the produce AC voltage
Power stations use AC generators to produce electrisity
faster revolutions produce not only more peaks but higher voltage
