Question
A vector has both magnitude and direction. Does it mean that anything that has magnitude and direction is necessarily a vector?

Answer

  1. For a physical quantity, only having magnitude and direction is not a sufficient condition to be a vector.
  2. A physical quantity also has to obey vectors law of addition to be termed as vector.
  3. Hence, anything that has magnitude and direction is not necessarily a vector.
    Example: Though current has definite magnitude and direction, it is not a vector.

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