Two metal rings with a common axis are placed near each othe

Two metal rings with a common axis are placed near each other, as shown in the figure. If current i_a is suddenly set up and is increasing in ring a as shown, the current in ring b will be Incorrect. Lenz\'s Law states that the induced current will be in such a direction as to produce a secondary magnetic field that opposes the change in flux that induced it.

in the same direction as Ia