What are the three things you need to produce current mechanically?

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Multiple Choice

What are the three things you need to produce current mechanically?

Explanation:
Generating current mechanically relies on three ingredients: a conductor, a magnetic field, and rotating (relative) motion. The conductor is needed so charges have a path to flow through. The magnetic field provides the force that moves charges when there is motion, creating an electromotive force. The rotating motion supplies the energy and creates a continual change in the magnetic environment seen by the conductor, so the induced current can keep flowing. Without a conductor, there’s no current; with an insulator there’s no current; and static motion wouldn’t produce a changing magnetic flux to sustain induction.

Generating current mechanically relies on three ingredients: a conductor, a magnetic field, and rotating (relative) motion. The conductor is needed so charges have a path to flow through. The magnetic field provides the force that moves charges when there is motion, creating an electromotive force. The rotating motion supplies the energy and creates a continual change in the magnetic environment seen by the conductor, so the induced current can keep flowing. Without a conductor, there’s no current; with an insulator there’s no current; and static motion wouldn’t produce a changing magnetic flux to sustain induction.

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