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 4.5 *10^-3 v/m the magitude of the magnetic field must be changing at the rate:

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