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Question 20191
JEE Physics · Medium

Magnetism: Earth's Magnetic Field — Components MCQ

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Earth's Magnetic Field — ComponentsMediumQuestion 20191

Question

If angle of dip is δ, horizontal component H and total field B are related by:
  1. A
    H = B sinδ
  2. B
    H = B cosδ
    Correct
  3. C
    H = B tanδ
  4. D
    H = B/cosδ

Correct answer

H = B cosδ

Explanation

The total field B has components BH = B cosδ (horizontal) and BV = B sinδ (vertical). BV/BH = tanδ.

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