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.
Due to the earth's magnetic field, charged cosmic ray particles
A compass needle whose magnetic moment is $60 \,amp × m^2$ pointing geographical north at a certain place, where the horizontal component of earth's magnetic field is $40\, \mu Wb/m^2$, experiences a torque $1.2 \times {10^{ - 3}}\,N \times m.$ What is the declination at this place......$^o$
The total intensity of earth's magnetic field at the magnetic equator is $5$ $units$. Its value at a magnetic latitude of $37^o $ is equal to
Explain magnetic declination.
At a point $A$ on the earth's surface the angle of $\operatorname{dip}, \delta=+25^{\circ} .$ At a point $B$ on the earth's surface the angle of dip, $\delta=-25^{\circ} .$ We can interpret that