Frequency response graphs: Graph A - Graph B - Graph C

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Identify the following unknown circuit elements (resistor, capacitor or inductor) and match the frequency response graphs (Graphs A--C) to the current and voltage vs. time graphs shown for the circuits below. Explain your answers. Restart.

1. Circuit I
2. Circuit II
3. Circuit III

Problem authored by Morten Brydensholt and Wolfgang Christian.