A rectangular loop of sides `10 cm and 5 cm` carrying a current `I` of `12 A` is placed in different orientations as shown in the figures.
I.
II.
III.
IV.
If there is a uniform magnetic field of `0.3 T` in the positive `z`-direction, in which orientations the loop would be in (i) stable equilibrium and (ii) unstable equilibrium?
Options:
(a) I and II
(b) I and III
(c) II and IV
(d) II and III