At a given place on the Earth,the angle between the Magnetic Meridian and the Geographic Meridian is called . . . . . . .

What was the early recognition of Earth's magnetic field? State the dynamo effect.

$A$ compass needle whose magnetic moment is $60 \, A \cdot m^2$ is pointing towards the geographical north at a certain place,where the horizontal component of the Earth's magnetic field is $40 \, \mu Wb/m^2$. It experiences a torque of $1.2 \times 10^{-3} \, N \cdot m$. What is the angle of declination at this place (in $^o$)?

Explain the angle of dip.

The pole near the geographic north pole is called ...... . The pole near the geographic south pole is called ...... .

The angle of dip at the magnetic equator is....$^o$