Calculate the cutoff frequency of a first-order low-pass filter for R1 = 2.5kΩ and C1 = 0.05μF___________?
A. 1.273kHz
B. 12.73kHz
C. 127.3 kHz
D. 127.3 Hz
A. 1.273kHz
B. 12.73kHz
C. 127.3 kHz
D. 127.3 Hz