Common mode
Differential mode
Non inverting mode
Inverting mode
Answer is Wrong!
Answer is Right!
The correct answer is: A. Common mode
A differential amplifier is an amplifier that amplifies the difference between two input signals. When the input of differential amplifier V1 = 0, then the differential amplifier is said to be operated in common mode. This means that the two input signals are equal, and the output of the amplifier will be zero.
The other options are incorrect because they do not describe the situation when the input of differential amplifier V1 = 0.
- Option B: Differential mode. This is the mode of operation when the two input signals are different. The output of the amplifier will be proportional to the difference between the two input signals.
- Option C: Non inverting mode. This is the mode of operation when the input signal is applied to the non-inverting input of the amplifier. The output of the amplifier will be the input signal amplified by the gain of the amplifier.
- Option D: Inverting mode. This is the mode of operation when the input signal is applied to the inverting input of the amplifier. The output of the amplifier will be the input signal amplified by the gain of the amplifier, but with a 180-degree phase shift.