Class 12 Exam > Class 12 Questions > The voltage gain of an amplifier with 9% nega...
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The voltage gain of an amplifier with 9% negativefeedback is 10. The voltage gain withoutfeedback will be [2008]
- a)90
- b)10
- c)1.25
- d)100
Correct answer is option 'D'. Can you explain this answer?
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Verified Answer
The voltage gain of an amplifier with 9% negativefeedback is 10. The v...
Negative feedback is applied to reduce the
output voltage of an amplifier. If there is no
negative feedback, the value of output
voltage could be very high. In the options
given, the maximum value of voltage gain is
100. Hence it is the correct option.
output voltage of an amplifier. If there is no
negative feedback, the value of output
voltage could be very high. In the options
given, the maximum value of voltage gain is
100. Hence it is the correct option.
Most Upvoted Answer
The voltage gain of an amplifier with 9% negativefeedback is 10. The v...
Given, the voltage gain of an amplifier with 9% negative feedback is 10.
To find: The voltage gain without feedback.
Solution:
Let's assume the voltage gain without feedback as A.
The voltage gain of an amplifier with negative feedback is given by the formula:
A(f) = A / (1 + βA)
where A is the voltage gain without feedback and β is the feedback factor (percentage feedback/100)
Substituting the given values, we get:
10 = A / (1 + 0.09A)
Solving for A, we get:
A = 100
Therefore, the voltage gain without feedback is 100.
Hence, the correct option is D.
To find: The voltage gain without feedback.
Solution:
Let's assume the voltage gain without feedback as A.
The voltage gain of an amplifier with negative feedback is given by the formula:
A(f) = A / (1 + βA)
where A is the voltage gain without feedback and β is the feedback factor (percentage feedback/100)
Substituting the given values, we get:
10 = A / (1 + 0.09A)
Solving for A, we get:
A = 100
Therefore, the voltage gain without feedback is 100.
Hence, the correct option is D.
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Community Answer
The voltage gain of an amplifier with 9% negativefeedback is 10. The v...
One applies negative feed-back, which reduces the output but makes it very stable. For voltage amplification amplifiers the value of output voltage without the negative feed-back could be very high. The value max shown here is 100.
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The voltage gain of an amplifier with 9% negativefeedback is 10. The voltage gain withoutfeedback will be [2008]a)90b)10c)1.25d)100Correct answer is option 'D'. Can you explain this answer?
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The voltage gain of an amplifier with 9% negativefeedback is 10. The voltage gain withoutfeedback will be [2008]a)90b)10c)1.25d)100Correct answer is option 'D'. Can you explain this answer? for Class 12 2024 is part of Class 12 preparation. The Question and answers have been prepared according to the Class 12 exam syllabus. Information about The voltage gain of an amplifier with 9% negativefeedback is 10. The voltage gain withoutfeedback will be [2008]a)90b)10c)1.25d)100Correct answer is option 'D'. Can you explain this answer? covers all topics & solutions for Class 12 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The voltage gain of an amplifier with 9% negativefeedback is 10. The voltage gain withoutfeedback will be [2008]a)90b)10c)1.25d)100Correct answer is option 'D'. Can you explain this answer?.
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