Give information about the Earth’s magnetic field lines and the location of the magnetic poles.
Give information about the Earth’s magnetic field lines and the location of the magnetic poles.
The magnetic field lines of the Earth resemble that of a magnetic dipole located at the centre of the Earth.
The axis of the dipole does not coincide with the axis of rotation of the Earth but is presently tilted by $11.3^{\circ}$.
The magnetic poles are located where the magnetic field lines due to the dipole enter or leave the Earth.
The location of the north magnetic pole is at a latitude of $79.74^{\circ} \mathrm{N}$ and a longitude of $71.8^{\circ} \mathrm{W}$, a place somewhere in north Canada.
The magnetic south pole is at $79.74^{\circ} \mathrm{S}, 108.22^{\circ} \mathrm{E}$ in the Antarctica.
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If $\theta _1$ and $\theta_2$ be the apparent angles of dip observed in two vertical planes at right angles to each other, then the true angle of dip $\theta$ is given by
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- [JEE MAIN 2019]
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