What are the uses of back emf?

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I saw some questions regarding back emf and exercise bikes/elliptical gym machines. Are there any more real life uses for back emf other than the classic dc motor stuff?

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Anonymous 0 Comments

Back EMF is the voltage created from the magnetic field just created by the motor spinning up.

This property is specific to motors but the general property (changing magnetic files inducing voltage) is widely used and known as Faraday’s law. Also related to Lenz’s law