Electromagnets, Generators, And Simple Electric Motors Question Preview (ID: 31021)
Answer Questions On Electromagnets, Generators, And Simple Electric Motors.
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Formed when a wire in an electric circuit is wrapped around an iron core producing a magnetic field
a) Electromagnet
b) Bar magnet
c) Generator
d) Motor
True or False: An electromagnet loses its magnetism if the electric current stops flowing
a) True
b) False
c)
d)
Produces an electric current when a coil of wire wrapped around an iron core is rotated near a magnet
a) Generator
b) Motor
c) Magnet
d) Car
__________at power plants produce electric energy for our homes.
a) Electricity
b) Generators
c) Cars
d) Magnets
Changes electrical energy to mechanical energy.
a) Simple electric motor
b) Generator
c) Car
d) Magnet
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
a) Chemical
b) Light
c) Sound
d) Mechanical
Surrounding a magnet is a __________________ that applies a force, a push or pull, without actually touching an object.
a) magnetic field
b) circuit
c) coil
d) car
A coil of wire spinning around a magnet or a magnet spinning around a coil of wire can form an _____________________.
a) magnetic field
b) magnet
c) electric current
d) motor
__________________ are huge wheels that rotate when pushed by water, wind, or steam (associated with generators)
a) Motors
b) Turbines
c) Magnet
d) Car
The opposite ends of a magnet are called_______________.
a) Left and right
b) Up and down
c) East and west
d) North and south
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