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JAMB Physics 1995 Question 38

Question 38

Magnetism

At different locations on the earth's surface, the earth's magnetic field is

  1. A.the same in magnitude and direction
  2. B.the same in magnitude but different in direction
  3. C.different in both magnitude and direction
  4. D.different in magnitude but not in direction
Show the answer and explanation

Answer: C (different in both magnitude and direction)

Explanation

The earth's field is strongest near the poles and weakest near the equator, and its direction (dip and declination) also changes from place to place.