A Conductor Is Formed into a Flat Loop That Encloses $1.0 \mathrm {~m} ^ { 2 }$

Multiple Choice

A conductor is formed into a flat loop that encloses an area of $1.0 \mathrm {~m} ^ { 2 }$ The plane of the loop is oriented at a 30.0° angle with the xy-plane.A uniform time-varying $\vec { B }$ field is oriented parallel to the z-axis.If the emf induced in the loop is $25.0 \mathrm {~V}$ what is the rate at which the magnitude of the $\vec { B }$ field strength is changing?

A) 29 T/s
B) 22 T/s
C) 50 T/s
D) 13 T/s