Question

The magnetic moment of a current carrying loop carrying current I as shown in figure, is

• A. $\sqrt{2}l{a}^{2}hatk$
• B. $l{a}^{2}hatk$
• C. $\frac{l{a}^2}{\sqrt{2}}\hat{k}$
• D. $2l{a}^{2}hatk$

Answer 1

Answer: (B)

􏰅􏰅$\overrightarrow{M}=i\overrightarrow{A}=i{a}^2\hat{k}$