What is the formula of lower cut-off frequency of an RC coupled amplifier?
A. $${{\text{f}}_{\text{L}}} = \frac{1}{{2\pi {\text{RC}}}}$$
B. $${{\text{f}}_{\text{L}}} = \frac{\pi }{{2{\text{RC}}}}$$
C. $${{\text{f}}_{\text{L}}} = \frac{{\text{R}}}{{2\pi {\text{C}}}}$$
D. $${{\text{f}}_{\text{L}}} = \frac{{\text{C}}}{{2\pi {\text{R}}}}$$
Answer: Option A
This Question Belongs to Electronics And Communications Engineering >> Analog Electronics
The action of JFET in its equivalent circuit can best be represented as a
A. Current controlled Current source
B. Current controlled voltage source
C. Voltage controlled voltage source
D. Voltage controlled current source
In a p+n junction diode under reverse bias, the magnitude of electric field is maximum at
A. The edge of the depletion region on the p-side
B. The edge of the depletion region on the n-side
C. The p+n junction
D. The center of the depletion region on the n-side
To prevent a DC return between source and load, it is necessary to use
A. Resistor between source and load
B. Inductor between source and load
C. Capacitor between source and load
D. Either A or B
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