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RC Circuits

Q1: If the bandwidth of an RC low-pass filter is 20 kHz, the cutoff frequency is also 20 kHz.

A True

B False

ANS:A - True

Cut off frequency is the frequency at which the output voltage equals to 70.1% of the input signal.

Thus, the above or below this frequency of 20KHz the output will be less than that of the input voltage.



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