Two identical circular loops of metal wire are lying on a table without touching each other. Loop-A carries a current which increases with time. In response, the loop-B

See fig When the current in loop A isincreased, the magnetic flux associated with loop B changes. The direction of induced current in B is that of current in loop A (according to Lenz's law). So, the top faces of both the loops will behave like the poles of same nature. Hence loop B is repelled by loop A.