Electromagnets, Generators, And Simple Electric Motors

Test Description: Answer questions on electromagnets, generators, and simple electric motors.

Instructions: Answer all questions to get your test result.

1) Formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field

2) True or False: An electromagnet loses its magnetism if the electric current stops flowing

3) Produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet

4) __________at power plants produce electric energy for our homes.

5) Changes electrical energy to mechanical energy.

6) In a simple electric motor, like poles of the magnets repel and unlike poles of the magnets attract. This causes the coil to rotate and thus changes electrical energy to ________________energy

7) Surrounding a magnet is a __________________ that applies a force, a push or pull, without actually touching an object.

8) A coil of wire spinning around a magnet or a magnet spinning around a coil of wire can form an _____________________.

9) __________________ are huge wheels that rotate when pushed by water, wind, or steam (associated with generators)

10) The opposite ends of a magnet are called_______________.


*select an answer for all questions

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