List of top Physics Questions on The Earth’s Magnetism asked in AP EAPCET

The equitorial magnetic field of earth on its surface at equator is $0.4\text{ G}$. Then its dipole moment is (The radius of the earth $R=6400\text{ km}$):

The magnetic susceptibility is negative for:

If the radius of the Earth is \( 6.4 \times 10^6 \, m \) and its magnetic dipole moment is \( 1.3 \times 10^{23} \, Am^2 \), then the magnetic field at the equator is:

A short bar magnet placed in a horizontal plane has its axis aligned along north-south direction. Null points are found on the axis of the magnet at \(20\ \text{cm}\) from the center of magnet. The earth's magnetic field at the place is \(B\) and angle of dip is \(0^\circ\). If the total magnetic field on the normal bisector of the magnet \(20\ \text{cm}\) from the center of the magnet is \(0.6\ \text{G}\), then the magnitude of \(B\) is: