WorksheetsElectromagnetism
Total questions: 12
Worksheet time: 11mins
What happens when an electric current flows through a wire?
The wire begins to spin.
Nothing happens.
A field of gravity is created around the wire.
A magnetic field is created around the wire.
What does this image show?
Parallel circuit
Series circuit
Magnet
Electromagnet
A _____________ transforms mechanical energy into electrical energy.
generator
electromagnet
circuit
magnetic field
Increasing the number of coils in an electromagnet will _________ the power of the magnet.
decrease
increase
not affect
What three minerals are attracted to a magnet?
Gold, copper, cobalt
Cobalt, aluminum, silver
Iron, copper, aluminum
Iron, nickel, cobalt
What happens when an electric current flows through a wire?
The wire begins to spin.
Nothing happens.
A field of gravity is created around the wire.
A magnetic field is created around the wire.
The area of magnetic force around a magnet is known as its ____________.
magnetism
magnetic current
magnetic field
electric current
What type of core is best for electromagnets?
Steel
Iron
Plastic
Copper
What conclusion can you draw from this graph?
As current increases, magnetic strength decreases.
As current increases, magnetic strength increases.
As current decreases, magnetic strength increases.
There is no relationship between current and magnetic strength.
