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Which of the following is not true for a voltage follower amplifier?
  • a)
    Input voltage is equal to output voltage
  • b)
    Input resistance is infinite and output resistance is zero
  • c)
    It has 100% negative feedback
  • d)
    None of the mentioned
Correct answer is option 'D'. Can you explain this answer?
Verified Answer
Which of the following is not true for a voltage follower amplifier?a)...
All the statements are false.
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Most Upvoted Answer
Which of the following is not true for a voltage follower amplifier?a)...
Voltage Follower Amplifier

A voltage follower amplifier is a type of operational amplifier circuit that has a high input impedance and low output impedance. It is also known as a unity gain amplifier or a buffer amplifier because its output voltage is equal to its input voltage and it has a gain of one.

Features of Voltage Follower Amplifier

The following are the features of a voltage follower amplifier:

Input voltage is equal to output voltage

In a voltage follower amplifier, the input voltage is equal to the output voltage. This means that the output voltage follows the input voltage exactly. Hence, it is called a voltage follower.

Input resistance is infinite and output resistance is zero

In an ideal voltage follower amplifier, the input resistance is infinite, which means that no current flows into the input terminal. The output resistance is zero, which means that it can drive any load without affecting the output voltage.

It has 100% negative feedback

A voltage follower amplifier has 100% negative feedback because the output voltage is fed back to the inverting input of the operational amplifier through a feedback resistor. This stabilizes the gain of the amplifier and reduces distortion.

Not true for a voltage follower amplifier

None of the mentioned is not true for a voltage follower amplifier. All the mentioned features are true for a voltage follower amplifier. It has a gain of one, infinite input resistance, zero output resistance, and 100% negative feedback. Hence, option D is incorrect.
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Which of the following is not true for a voltage follower amplifier?a)Input voltage is equal to output voltageb)Input resistance is infinite and output resistance is zeroc)It has 100% negative feedbackd)None of the mentionedCorrect answer is option 'D'. Can you explain this answer?
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