Question

The apparent dip angle at a point where the dip circle is set to 0° is 30°. If the vertical component of the Earth’s magnetic field is 0.4 Gauss, then calculate the Earth’s magnetic field at that point if the true dip is 23°.​

Answer 1

Dear Student ,
$$\begin{gathered} Here,Ibetheearth\text{'}smagneticfieldandhencethegivenis, \\ V=I\sin \theta =0·4G \\ Nowwhenthe\theta =23°the, \\ I\sin 23°=0·4 \\ \Rightarrow I=\frac{0·4}{\sin 23°}=1·024\hspace{0.17em}G \end{gathered}$$

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