A bar magnet of length l and magnetic moment pm is bent in the form of an arc as shown in Figure. The new magnetic dipole moment will be
A. pm
B. \(\frac{3}{\pi} p_{m}\)
C. \(\frac{2}{\pi} \mathrm{p}_{\mathrm{m}}\)
D. \(\frac{1}{2} \mathrm{p}_{\mathrm{m}}\)
Answer:B
A bar magnet of length l and magnetic moment pm is bent in the form of an arc as shown in Figure. The new magnetic dipole moment will be
A. pm B. \(\frac{3}{\pi} p_{m}\) C. \(\frac{2}{\pi} \mathrm{p}_{\mathrm{m}}\) D. \(\frac{1}{2} \mathrm{p}_{\mathrm{m}}\)