Question

A circular loop carrying a current $I$ is placed in the x-y plane as shown in figure.An uniform magnetic field $\overrightarrow{B}$ is oriented along the positive z-axis.The loop tends to :

• A. expand
• B. contract
• C. rotate about x-axis
• D. rotate about y-axis

Answer 1

The correct option is A expand

According to Fleming left hand rule, the force on the loop is outward of the loop. So it will expand.