1-A fixed 18.9-cmcm-diameter wire coil is perpendicular to a magnetic field 0.50 TT pointing up. In 0.30 ss , the field is changed to 0.35 TT pointing down.

What is the average induced emf in the coil?

2-A circular loop in the plane of a paper lies in a 0.85 TT magnetic field pointing into the paper. The loop's diameter changes from 21.5 cmcm to 5.4 cmcm in 0.49 ss .

-What is the direction of the induced current?

clockwise

counterclockwise

-What is the magnitude of the average induced emf?

-What is the average induced current if the coil resistance is 1.5 ?