At high frequencies,the voltage gain of an ac amplifier decreases because of
A) low supply voltages.
B) large filter capacitors.
C) direct coupling design.
D) stray-wiring capacitance.

Question

Quizplus · Accepted Answer

At high frequencies, the voltage gain of an AC amplifier decreases due to the presence of stray-wiring capacitance. This capacitance can cause the input signal to be shunted to ground, reducing the effective input voltage and hence reducing the voltage gain of the amplifier. The other options (low supply voltages, large filter capacitors, direct coupling design) do not directly affect the voltage gain at high frequencies.

At High Frequencies,the Voltage Gain of an Ac Amplifier Decreases