In an R-L circuit, the impedance is 30 &ohm; at a frequency of 100 Hz. At 200 Hz, the impedance should be

In an R-L circuit, the impedance is 30 &ohm; at a frequency of 100 Hz.

1.	In an R-L circuit, the impedance is 30 &ohm; at a frequency of 100 Hz. At 200 Hz, the impedance should be
Answer» Z = (R2 + ω2L2)0.5.