Answers TX-Physics BMagnetic Field and Force

Applications of Electromagnetic Induction Answers

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Which is an important step in how an electric motor uses magnetic force to produce motion?

As the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then attract.

As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then repel.

As the north pole of the electromagnet nears the north pole of the permanent magnet, the current reverses and the poles of the magnets then repel.

As the north pole of the electromagnet nears the south pole of the permanent magnet, the current reverses and the poles of the magnets then attract.

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Which best describes what happens in an electric generator?

Motion causes constantly changing magnetic fields to induce electrical energy.

Motion causes constantly changing magnetic fields to induce kinetic energy.

Constantly changing magnetic fields lead to motion, which induces electrical energy.

Constantly changing magnetic fields lead to motion, which induces kinetic energy.

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