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What is a magnetic field?

the geographic poles of the earth
the shape, strength, and size of a magnet
an area of magnetic force around a magnet
a street sign to help direct you

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The area of magnetic force around a magnet. (C)
User CloakedEddy
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Answer: The area of magnetic force around a magnet

Explanation: "A magnetic field is a vector field that describes the magnetic influence of electric charges in relative motion and magnetized materials. A charge that is moving parallel to a current of other charges experiences a force perpendicular to its own velocity." *Wikipedia*.

User Johannes Sasongko
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