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Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier has
i. Less negative feedback
ii. Greater input impedance
iii. Less bandwidth
iv. More sensitive to Op - amp amplification factor variances
The correct statements among them is/are
- a)i, ii, iii only
- b)i and iv only
- c)i, iii, iv only
- d)ii and iii only
Correct answer is option 'C'. Can you explain this answer?
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Verified Answer
Two non - inverting amplifiers, one having unity gain another having g...
The feedback amplification factor is given by 
where A is open loop gain and βA is loop gain.
As feedback increases the gain decreases thereby bandwidth increases since gain bandwidth product of Op - amp is constant, also feedback increases input impedance while decreasing output impedance.
In this problem compared to non - inverting amplifier with unity gain the 100 gain amplifier has less negative feedback leading to leading to lesser bandwidth and input impedance
The sensitivity of feedback amplifier to Op - amp amplification factor variances is given by
Therefore compared to unity gain amplifier 100 gain amplifier is more sensitive to changes in open loop Op - amp gain.
Therefore compared to unity gain amplifier 100 gain amplifier is more sensitive to changes in open loop Op - amp gain.
Most Upvoted Answer
Two non - inverting amplifiers, one having unity gain another having g...
Two non-inverting amplifiers, one having unity gain and another having a gain of 100, are made using two identical Op-amps. We need to analyze the differences between these two amplifiers.
i. Less Negative Feedback:
The 100 gain amplifier has less negative feedback as compared to the unity gain amplifier. This is because the gain of the amplifier is directly proportional to the amount of negative feedback. In the 100 gain amplifier, the feedback resistor is much smaller compared to the input resistor, resulting in less negative feedback.
ii. Greater Input Impedance:
Both amplifiers have the same input impedance. The input impedance in a non-inverting amplifier is determined by the input resistor, which is the same for both amplifiers. Therefore, the input impedance is not affected by the gain of the amplifier.
iii. Less Bandwidth:
The 100 gain amplifier has less bandwidth compared to the unity gain amplifier. Bandwidth is inversely proportional to the gain of the amplifier. As the gain increases, the bandwidth decreases. Therefore, the 100 gain amplifier will have a narrower bandwidth compared to the unity gain amplifier.
iv. More Sensitive to Op-amp Amplification Factor Variances:
The 100 gain amplifier is more sensitive to Op-amp amplification factor variances compared to the unity gain amplifier. This is because the gain of the amplifier is directly affected by the Op-amp amplification factor. Any variations in the Op-amp amplification factor will result in a larger variation in the output of the 100 gain amplifier compared to the unity gain amplifier.
Therefore, the correct statements among them are i, iii, and iv only, which is option 'C'.
Comparison between Unity Gain Amplifier and 100 Gain Amplifier:
i. Less Negative Feedback:
The 100 gain amplifier has less negative feedback as compared to the unity gain amplifier. This is because the gain of the amplifier is directly proportional to the amount of negative feedback. In the 100 gain amplifier, the feedback resistor is much smaller compared to the input resistor, resulting in less negative feedback.
ii. Greater Input Impedance:
Both amplifiers have the same input impedance. The input impedance in a non-inverting amplifier is determined by the input resistor, which is the same for both amplifiers. Therefore, the input impedance is not affected by the gain of the amplifier.
iii. Less Bandwidth:
The 100 gain amplifier has less bandwidth compared to the unity gain amplifier. Bandwidth is inversely proportional to the gain of the amplifier. As the gain increases, the bandwidth decreases. Therefore, the 100 gain amplifier will have a narrower bandwidth compared to the unity gain amplifier.
iv. More Sensitive to Op-amp Amplification Factor Variances:
The 100 gain amplifier is more sensitive to Op-amp amplification factor variances compared to the unity gain amplifier. This is because the gain of the amplifier is directly affected by the Op-amp amplification factor. Any variations in the Op-amp amplification factor will result in a larger variation in the output of the 100 gain amplifier compared to the unity gain amplifier.
Therefore, the correct statements among them are i, iii, and iv only, which is option 'C'.
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Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer?
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Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer?.
Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? for Defence 2024 is part of Defence preparation. The Question and answers have been prepared according to the Defence exam syllabus. Information about Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? covers all topics & solutions for Defence 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer?.
Solutions for Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? in English & in Hindi are available as part of our courses for Defence.
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Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer?, a detailed solution for Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? has been provided alongside types of Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice Two non - inverting amplifiers, one having unity gain another having gain of 100 are made using two identical Op - amps. As compared to unity gain amplifier the 100 gain amplifier hasi. Less negative feedbackii. Greater input impedanceiii. Less bandwidthiv. More sensitive to Op - amp amplification factor variancesThe correct statements among them is/area)i, ii, iii onlyb)i and iv onlyc)i, iii, iv onlyd)ii and iii onlyCorrect answer is option 'C'. Can you explain this answer? tests, examples and also practice Defence tests.
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