Analogy Between Electrostatics Magnetostatics

A bar magnet is hung by a thin cotton thread in a uniform horizontal magnetic field and is in the equilibrium state. The energy required to rotate it by is . Now the torque required to keep the magnet in this new position is:

1.		2.
3.		4.

The net magnetic flux through any closed surface is:

1.	negative	2.	zero
3.	positive	4.	infinity