A Cylindrical Region of Radius R = 3

Multiple Choice

A cylindrical region of radius R = 3.0 cm contains a uniform magnetic field parallel to its axis.If the electric field induced at a point R/2 from the cylinder axis is 4.5 *10^-3 V/m the magnitude of the magnetic field must be changing at the rate of:

A) 0 T/s
B) 0.30 T/s
C) 0.60 T/s
D) 1.2 T/s
E) 2.4 T/s