AC Current Measurement

Suppose we apply 1 volt RMS (root mean squared) at 60 Hz across a series RL (resistor-inductor) load.

Using an AC ammeter, we measure a current through the load with an RMS magntitude of $$\frac{1}{\sqrt{2}}$$ amperes, which lags the source voltage by 45 degrees.

We then apply 1 volt RMS at 120 Hz across the same load. What RMS current magnitude will the ammeter measure in this case?

Assume that we neglect the skin effect.

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