# Electromagnetism

## A magnet and a solenoid can be used to generate electric current.

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## Electromagnets

Describes the function of electromagnets.
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## Electromagnets

Describes the function of electromagnets.
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## Electromagnets

Describes the function of electromagnets.
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## Unit 14.2 Electromagnets

Describes the function of electromagnets.
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## Extension: Electromagnets

Describes the function of electromagnets.
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• Interactive Simulations

## Doorbell

Understand how magnetic fields generated by solenoid coils can be used to create an operating doorbell.
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• Interactive Simulations

## Telegraph

Explore the concept of Morse Code and how signals are transfered over great distances by using telegraph machines based on electromagnets
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• Video

## Build An Electromagnet

Explains how to create an electromagnet and demonstrates the magnetic effects it has.
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• Real World Application

## Floating Trains?

How are magnets and trains related?
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• Real World Application

## Levitating Trains

Explore the physics behind Maglev Trains.
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• Real World Application