The region labelled with X represents the B) magnetic field
Explanation:
Magnetic fields are regions of space produced by charge in motion (e.g. a current) or by magnets, in which charged particles in motion experience a force perpendicular to their motion.
As we said, magnetic fields can be produced in two ways:
- By charged particles in motion, such as an electric current
- By a magnet
Magnets consist of two "poles", called "north pole" and "south pole" by convention, and the direction of the magnetic field is always from the North pole to the South pole. Similarly to what happens to electric charge, like poles repel each other (north-north or south-south) while opposite poles attract each other (north-south).
In this problem, we want to know what are the red arrows in the figure. We notice that the lines go from a block labelled with to a block labelled with S. These two blocks represent the poles of a magnet, with N being its North Pole and S being the South pole: therefore, the region marked with X represents the magnetic field of the magnet.
Learn more about magnetic fields:
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