Q28. A straight magnetic strip has a magnetic moment of $44 \mathrm { Am } ^ { 2 }$. If the strip is bent in a semicircular shape, its magnetic moment will be $\_\_\_\_$ $\mathrm { Am } ^ { 2 }$. (given $\left. \pi = \frac { 22 } { 7 } \right)$
Q28. A straight magnetic strip has a magnetic moment of $44 \mathrm { Am } ^ { 2 }$. If the strip is bent in a semicircular shape, its magnetic moment will be $\_\_\_\_$ $\mathrm { Am } ^ { 2 }$. (given $\left. \pi = \frac { 22 } { 7 } \right)$