Question

A rectangular current carrying coil having $N$ turns and area $A$ is placed in a uniform magnetic field $B$

Column I		Column II
A	Torque on the coil	1	$2 MB$
B	Maximum work done	2	NIBA $\sin \theta$
C	Potential energy of coil	3	When the plane of the coil is perpendicular to the field
D	Zero torque	4	$- MB \cos \theta$

• A. (A) $\rightarrow$ (2); (B) $\rightarrow$ (1) ; (C) $\rightarrow$ (3); (D) $\rightarrow$ (4)
• B. (A) $\rightarrow$ (2); (B) $\rightarrow$ (1); (C) $\rightarrow$ (4); (D) $\rightarrow$ (3)
• C. (A) $\rightarrow$ (4); (B) $\rightarrow$ (3); (C) $\rightarrow$ (2); (D) $\rightarrow$ (1)
• D. (A) $\rightarrow$ (3) ; (B) $\rightarrow$ (1) ; (C) $\rightarrow$ (4); (D) $\rightarrow$ (2)

Answer 1

Answer: (B)

(A) $\rightarrow$ (2); (B) $\rightarrow$ (1); (C) $\rightarrow$ (4); (D) $\rightarrow$(3)