A bar magnet $\mathrm{AB}$ is cut into two equal parts. ( as shown in figure). One part is kept over the…
A bar magnet $\mathrm{AB}$ is cut into two equal parts. ( as shown in figure). One part is kept over the other so that the pole $\mathrm{C}_{2}$ is above $\mathrm{C}_{1}$. If $\mathrm{M}$ is the magnetic moment of the
original magnet, the magnetic moment of the combination so formed is
M
$\frac{\mathrm{M}}{2}$
Zero
2M
Solution
A bar magnet is cut into two equal parts, and one part is placed over the other so that the opposite poles face each other (e.g., the north pole of one is above the south pole of the other). If
𝑀
M is the magnetic moment of the original magnet, what is the magnetic moment of the combination so formed?
Answer: (3) Zero
