two identical circular loops of metal wire are lying on a table without touching each other.loop A carries a current which inc with time.then loop B is repelled by loop A,why?

Dear student,

This is due to lenz's law

• As the magnet approaches the loop, the applied B field in the centre increases. This is a change.

• An Induced Field is created which attempts to negate the applied field - ie to keep the total field at zero - its original value.