At a place, the horizontal component of earth's magnetic field is B and angle of dip is 60°. What is the value of horizontal component of the earth's magnetic field at equator?
The horizontal component of the electric field is given by
where θ is the angle of dip at the given place
Be is the net magnetic field
Be=2BH=2B (given BH=B)
Now horizontal component at equator
angle of dip at equator is 0°