A long solenoid has a radius of 4.0 cm and has 800 turns/m. If the current in the solenoid is increasing at the rate of 3.0 A/s, what is the magnitude of the induced electric field at a point 2.2 cm from the axis of the solenoid?
a. 3.3 × 10^?5 V/m
b. 3.6 × 10^?5 V/m
c. 3.9 × 10^?5 V/m
d. 4.2 × 10^?5 V/m
e. 6.0 × 10^?5 V/m
a
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