Chemistry, 23.04.2020 20:08, mari530

Select the statement that best summarizes the central idea of the article.

Electromagnets are useful in many situations because they can be turned on and off.
Motors change mechanical energy to electrical energy.
Electromagnets work whether or not electricity is passing through the wire.
Electromagnets are useful around the home but not in industry.

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Select the statement that best summarizes the central idea of the article.

Electromagnet...