devarshi-dt-logo

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. I1 and I2 are the currents in the segments ab and cd. Then:

I1<I2

I1>I2

I1is in the direction ba andI2is in the direction cd

I1is in the direction ab andI2is in the direction dc

Solution:

According to Lenz's law, current will be in anticlockwise sense as magnetic field is increasing into the plane of paper.The induced magnetic field has to be out of the plane of the paper.Hence, the current in the segmentabwill be fromatoband current in the segmentcdwill bedtoc.