An RC filter is shown. The filter resistance R is variable between 180 and 2200

An RC filter is shown. The filter resistance R is variable between 180 Ω and 2200 Ω and the filter capacitance is C = 0.086 μF. At what frequency is the output amplitude equal to times the input amplitude if R = (a) 180 Ω? (b) 2200 Ω? (c) Is this a low-pass or high-pass filter? Explain.

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