A 4 mH inductor is connected to an AC voltage source of 141 V rms. If the rms current in the circuit is 0.85 A, what is the frequency of the source?
reactance X V/I 141/.85 165.88 ohms X 2(pi)fL f X/2(pi)L 165.88/2x3.14x4x10^ --3 6603 (check the calculation)
