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Identify the expression for horizontal component from the following.

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in Physics – Class 12 by (135k points)
Identify the expression for horizontal component from the following.

(a) BH=Bcosδ

(b) B=BH cosδ

(c) BH=\(\frac {B}{cos \delta }\)

(d) BH=2Bcosδ

I have been asked this question during a job interview.

The origin of the question is Earth’s Magnetism topic in division Magnetism and Matter of Physics – Class 12

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Right option is (a) BH=Bcosδ

The explanation is: Horizontal component is a component of Earth’s magnetic field along the horizontal direction in the magnetic meridian. It is denoted by BH. If B is the intensity of Earth’s total magnetic field, then the horizontal component of Earth’s magnetic field is given by:

BH=Bcosδ

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