A Long Solenoid Has a Radius of 2 $\mu$ V/m
B)8 $\mu$

Multiple Choice

A long solenoid has a radius of 2.0 cm and has 700 turns/m.If the current in the solenoid is decreasing at the rate of 8.0 A/s,what is the magnitude of the induced electric field at a point 2.5 cm from the axis of the solenoid?

A) 56 $\mu$ V/m
B) 8.8 $\mu$ V/m
C) 88 $\mu$ V/m
D) 69 $\mu$ V/m
E) 44 $\mu$ V/m