The current in a long solenoid of radius 3 cm and 20 turns/cm is varied with time at a rate of 2 A/s. Find the electric field at a distance of 4 cm from the center of the solenoid. μ0 = 4 π×10−7 H/m 6.53×10^3 N/C 9.65×10^3 N/C 3.33×10^3 N/C 5.55×10^3 N/C