Question

Match the columns I and II.

Column I		Column II
A	Axial field for a short dipole	1	-M.B
B	Equatorial field for a short dipole	2	$M\times B$
C	External field torque	3	${\mu }_{0}2M/4\pi {\pi }^3$
D	External field energy	4	$-{\mu }_{0}M/4\pi r^3$

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

Answer 1

Answer: (A)

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