A very small circular loop of area 5×10−4 m2 ,resistance 2Ω  and negligible inductance is initially coplanar and concentric with a much larger fixed circular loop of radius 0.1m.  A constant current of 1 ampere is passed in larger loop and smaller loop is rotated with a angular velocity '' ω rad/s   about its diameter.  The induced emf is  ___ ×10−9V