Question

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. $l_1$ and $l_2$ are the currents in the segments ab and cd. Then,

• A. $l_1>l_2$
• B. $l_1<l_2$
• C. $l_1$ is in the direction ba and $l_2$ is in the direction cd
• D. $l_1$ is in the direction ab and $l_2$ is in the direction dc

Answer 1

The correct option is D $l_1$ is in the direction ab and $l_2$ is in the direction dc

The flux going inside increases,the current direction has to be such that the flux going outside decreases.

Possible when,

$l_1$ is in direction of $ab$.

$l_2$ is in direction of $dc$.