WJEC A-Level Electronics AC Circuits and Passive Filters overview quiz quiz
12questions. Pick an answer and you'll see why right away.
For a sine wave, the RMS voltage equals the peak voltage:
The peak-to-peak value of a signal is:
Capacitive reactance X_C is given by:
As the frequency increases, the reactance of an inductor:
In a pure capacitor, the current:
A capacitor blocks DC because at zero frequency its reactance is:
An RC low-pass filter takes its output:
The cut-off frequency of an RC filter is:
At the cut-off frequency, the output voltage of an RC filter is what fraction of the input?
The cut-off frequency is called the minus 3 dB point because the output:
Voltage gain in decibels is calculated as:
A single-RC filter rolls off beyond the cut-off at a rate of: