With the electric motor it was demonstrated how electricity can
cause motion. What if instead of using electricity to run the motor,
we spin the electromagnet ourselves.? What will happen? Will we
make electricity? The answer is yes! Disconnect the battery from
the motor and replace it with a low current light bulb. Then come
up with a method of spinning the electromagnet quickly. This can
be done using a turbine like the one below. Other possibilities are
bike wheels and hand cranks.
The turbine is the method which is used by dams. They let rushing
water spin the electromagnet and produce electricity. This is also
how coal plants and nuclear reactors work. These systems create steam
by the burning of coal or by nuclear reactions that heat water. Steam
can produce a lot of pressure. The steam is then used to spin a turbine.
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