In an ac circuit with frequency 25 Hz producing an rms voltage of 30 V and a 30 Henry inductor, what is the rms current going through the inductor?

Xl = 2pi*F*L = 6.28*25*30 = 4710 Ohms.

I = V/Xl = 30/4710 = 0.0064 A = 6.4 mA