Question

What is the angle of dip at a place where the horizontal component `(B_H)` and vertical component `(B_V)` of earth’s magnetic field are equal : 

Options

•  130° 

• 60° 

•  45° 

•  90° 

Answer 1

45° 

Angle of dip = `tan  δ = B_V/B_H`

`tan  δ = B/B`

`δ = 45^circ`