A wire of resistance 8 ohms and length 2.2 m is bent into a circle and is concentric by a solenoid in which the magnetic flux changes from 4 T *m^2 to 2 T*m^2 in 0.3 seconds.
1. What is the emf in the wire?
2. What is the current in the wire?
3. What is the non-Coulomb electric field in the wire?