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The direction of the magnetic force on a current carrying wire located in an external magnetic field is which of the following?

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Correct Answer: D. A and B
In the situation described, there are 3 vectors and each of the 3 vectors are perpendicular to each other (you can imagine the relationship as being the x, y and z axes, or as governed by the right hand rule): the current (I), the electric field (F) and the magnetic field (B). The latter encircles the current carrying wire.
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