Question

A Place where the vertical component of the earth magnetic field is zero has the angle of dip equal to

Answer 1

Explanation:

At the north magnetic pole, the north end of the dip needle is down; at the south magnetic pole, the north end is up. At the magnetic equator the dip or inclination is zero. Hey !! On the equator S, the vertical component of earth's magnetic field is zero.

Answer 2

When angle of dip becomes zero,  vertical component of earth magnetic field also becomes zero.  

Step-by-step explanation:

Although the direction and magnitude of the field varies from place to place on the earth's surface, near the equator the vertical component is close to zero.

     $B.V. = B \times sin \theta$

where,

B.V. is the vertical component of earth 's magnetic field

B is  earth's magnetic field at a place  = angle of dip

So, when angle of dip becomes zero,  vertical component of earth magnetic field also becomes zero  i.e. at the magnetic equator.