A 70-turn coil has a diameter of 11 cm. The coil is placed in a spatially uniform magnetic field of magnitude 0.70 T so that the face of the coil and the magnetic field are perpendicular. Find the magnitude of the emf induced in the coil (in V) if the magnetic field is reduced to zero uniformly in the following times. (a) 0.90 s (b) 9.0 s (c) 55 s Additional Materials Reading 2. [-/2 Points] DETAILS OSUNIPHYS1 30.1.WA.002. MY NOTES ASK YOUR TEACHER PRACTICE ANOTHER A solenoid has 465 closely spaced turns, a length of 12.0 cm, a radius of 3.00 cm, and carries a current of 13.5 A. Determine the magnitude of the magnetic flux through the following. 12 R fR (a) the disk-shaped area of radius twice that of the solenoid that is perpendicular to and centered on the axis of the solenoid as shown in the figure Wb (b) the annulus with an inner radius half that of the solenoid and an outer radius equal to that of the solenoid Additional Materials Reading