Magnetism Question 262
Question: Let V and H be the vertical and horizontal components of earth’s magnetic field at any point on earth. Near the North Pole
Options:
A) V»H
B) V«H
C) V=H
D) V=H=0
Show Answer
Answer:
Correct Answer: A
Solution:
[a] $ H=B,\cos ,\theta $
$ V=B,,\sin ,\theta $ Here B = earth’s magnetic field $ \theta $ = angle of dip = $ 90{}^\circ $ at north pole
$ \Rightarrow ,,,H=B,\cos 90^{o}=0 $
$ V=B,\sin ,90^{o}=B\Rightarrow B»H $
BETA
