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The direction of the magnetic field in a certain region of space is determined by firing...

The direction of the magnetic field in a certain region of space is determined by firing a test charge into the region with its velocity in various directions in different trials. The field direction is:

Group of answer choices

one of the directions of the velocity when the magnetic force is zero

the direction of the velocity when the magnetic force is a maximum

the direction of the magnetic force

perpendicular to the velocity when the magnetic force is zero

none of the above

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