Q42 / 60 · JEE Advanced 2009 (Paper 1) · Physics
The figure shows certain wire segments joined together to form a coplanar loop. The loop is placed in a perpendicular
magnetic field in the direction going into the plane of the figure. The magnitude of the field increases with time. $I_1$ and $I_2$ are the currents in the segments $a b$ and $c d$. Then,


- A$I_1>I_2$
- B$I_1 < I_2$
- C$I_1$ is in the direction ba and $I_2$ is in the direction $c d$
- Correct answerD$I_1$ is in the direction $a b$ and $I_2$ is in the direction $d c$
Solution
Cross $\otimes$ magnetic field passing from the closed loop is increasing. Therefore, from Lenz's law induced current will product $\operatorname{dot} \odot$ magnetic field. Hence, induced current is anticlockwise.
Hence, the correct answer is option: 'D'.