PhysicsState whether the following statement is true or false:When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract.

State whether the following statement is true or false:


When two magnets are brought together, the opposite poles will attract one another, but the like poles will repel one another. This is similar to electric charges. Like charges repel, and unlike charges attract.


  1. A
    True
  2. B
    False 

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    Solution:

    The given statement is true.
    Concept: The magnetic force is the attraction or repellence of moving electric charges. This vector possesses both direction and charge. Its magnetic field determines how strongly or how effectively charges are attracted to or repelled from one another. The magnetic field lines can be measured in terms of magnetic flux density in SI units of tesla or magnetic field strength in SI units of ampere per metre. Following are some characteristics of magnetic field lines:
    1. They take care not to collide.
    2. The field lines' density reveals the forces' relative strengths.
    3. Despite the fact that they always create closed loops, inside the magnet, they produce straight lines.
    4. The North Pole is where the magnetic field lines begin or emerge, and the South Pole is where they stop or terminate.
    The magnetic field lines of two bar magnets may be drawn using the nature described above as a guide when the following conditions are met: a) Like poles are facing each other as illustrated in the image below:
     b) When opposite poles are facing one another, as in the illustration below:
    Thus, although being utterly different, the two field patterns nevertheless have some similarities.
    Hence, the given statement is true.
     
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