Opening the paper…
Electronic Systems Thinking and Circuits, Quiz 2
For a Band Pass Filter constructed by cascading (connecting in series) a low pass and high pass filter, the cut-off frequency of the low pass filter should be smaller than that of the high pass filter.
For a Band Pass Filter constructed by cascading (connecting in series) a low pass and high pass filter, the cut-off frequency of the low pass filter should be smaller than that of the high pass filter. At the cut-off frequency, the amplitude of the output voltage of a Low Pass Filter will be equal to that of the input. If the time constant of an RC circuit is less than the time period of the input square pulse wave signal, the charging will be slow.