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Why might it be useful to be able to turn the electromagnet on and off?
- to latch onto and let go of objects
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What does electric current measure?
- how much electrical energy moves in a circuit
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How is a magnetic field produced?
- when a current runs through a conductor
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Which statement best describes how an electromagnetic motor works?
- Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field
An electromagnet is the most powerful type of magnet there is. It is a magnet with a current running through if that can be turned on and off. Why might it be useful to be able to turn the electromagnet on and off? (1 point)
to reduce wearing out of the magnet over time
to not waste electricity
to latch onto and let go of objects
to control the strength of the magnet:
What does electric current measure? (1 point)
How quickly electrical energy moves in a circuit
How frequently electrical energy moves in a circuit
how well electrical energy moves in a circuit
how much electrical energy moves in a circuit
How is a magnetic field produced? (1 point)
when electrons move through a circuit
when an electromagnetic field interacts with a magnet
when a current runs through a conductor
when an object has an electric charge
Which statement best describes how an electromagnetic motor works? (1 point)
Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field
Electrons are moved through a circuit, creating a current. That current interacts with a magnet, moving the conductor in the orientation of the field
Electrons are moved through a magnet, creating a circuit. That circuit interacts with a current, moving the conductor in the orientation of the field
Electrons are moved through a current, creating a circuit. That circuit interacts with a magnet, moving the conductor in the orientation of the field.
1 answer