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A compass needle moves when the compass is brought near a wire. What can you infer about the wire?
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
Why would a generator be an important part of an electrical circuit?
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
Which is the best way to generate an electrical current in a coil of wire?
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
An electromagnet becomes magnetic only when
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
A wire carrying electric current wrapped around an iron ore is called a(n)
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
What item is missing that could prevent a simple electric motor from working?
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
The region around a magent where the magnetic forces act is the
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
An electromagnet is produced by running an electric current through a coil of wire. How would wrapping the wire around an iron core affect the electromagnet?
rotate the coil in a magnetic field
magnetic field
The wire has an electric current flowing through it
The strength of the electromagnet would increase
electromagnet
The generator changes mechanical energy into electrical energy
electricity passes through
It is missing the magnet
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