Q .     A rectangular loop of sides `10` cm and `5` cm carrying a current `I` and `12` A is placed in different orientations as shown in the figures above.
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?

JEE 2015 Mains 4 April
A

(a) and (b), respectively

B

(a) and (c), respectively

C

(b) and (d), respectively

D

(b) and (c), respectively

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