A small, circular ring is inside a large...

A small, circular ring is inside a larger loop that is connected to a battery and a switch as shown in Fig. 3.25. Use Lenz's law to find the direction of the current induced in the small ring
(a) just after switch `S` is closed,
(b) after `S`has been closed for a long time,
( c) just after `S` has been reopened after being closed for a long time. ltbr.

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