Physics Exam > Physics Questions > The certain inverting amplifier has a closed ...
Start Learning for Free
The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?
Correct answer is '25'. Can you explain this answer?
| FREE This question is part of | Download PDF Attempt this Test |
Verified Answer
The certain inverting amplifier has a closed loop gain of 25. The Op-A...
The closed loop gain depends on the configuration and open loop gain is completely independent of it. Hence even if open loop gain is changed, the closed loop gain remains at 25 with the same configuration.
The correct answer is: 25
The correct answer is: 25
Most Upvoted Answer
The certain inverting amplifier has a closed loop gain of 25. The Op-A...
The Inverting Amplifier
In order to understand the closed loop gain of the inverting amplifier, we need to first understand the concept of open loop gain and closed loop gain.
Open Loop Gain
The open loop gain of an operational amplifier (Op-Amp) is the gain of the amplifier when no feedback is applied. It is a measure of the amplifier's intrinsic amplification capability and is typically very large. In this case, the first Op-Amp has an open loop gain of 100000 and the second Op-Amp has an open loop gain of 200000.
Closed Loop Gain
The closed loop gain of an amplifier is the gain when feedback is applied. In the case of the inverting amplifier, the closed loop gain can be calculated using the formula:
Closed Loop Gain = - (Rf / Rin)
where Rf is the feedback resistor and Rin is the input resistor.
Calculating the Closed Loop Gain
Given that the closed loop gain of the first Op-Amp is 25, we can use the formula to calculate the feedback resistor:
25 = - (Rf / Rin)
Since the closed loop gain is positive, the feedback resistor should be negative. Let's assume Rf = -1kΩ.
Now, let's substitute the second Op-Amp with an open loop gain of 200000 into the configuration. Since the closed loop gain formula remains the same, the feedback resistor will still be -1kΩ.
Understanding the Closed Loop Gain
The closed loop gain is determined by the ratio of the feedback resistor to the input resistor. In this case, the feedback resistor remains the same at -1kΩ. Therefore, the closed loop gain will also remain the same at 25.
Conclusion
In summary, the closed loop gain of the inverting amplifier remains 25 even when the Op-Amp with an open loop gain of 200000 is substituted into the configuration. This is because the closed loop gain is determined by the ratio of the feedback resistor to the input resistor, and in this case, the feedback resistor remains the same.
In order to understand the closed loop gain of the inverting amplifier, we need to first understand the concept of open loop gain and closed loop gain.
Open Loop Gain
The open loop gain of an operational amplifier (Op-Amp) is the gain of the amplifier when no feedback is applied. It is a measure of the amplifier's intrinsic amplification capability and is typically very large. In this case, the first Op-Amp has an open loop gain of 100000 and the second Op-Amp has an open loop gain of 200000.
Closed Loop Gain
The closed loop gain of an amplifier is the gain when feedback is applied. In the case of the inverting amplifier, the closed loop gain can be calculated using the formula:
Closed Loop Gain = - (Rf / Rin)
where Rf is the feedback resistor and Rin is the input resistor.
Calculating the Closed Loop Gain
Given that the closed loop gain of the first Op-Amp is 25, we can use the formula to calculate the feedback resistor:
25 = - (Rf / Rin)
Since the closed loop gain is positive, the feedback resistor should be negative. Let's assume Rf = -1kΩ.
Now, let's substitute the second Op-Amp with an open loop gain of 200000 into the configuration. Since the closed loop gain formula remains the same, the feedback resistor will still be -1kΩ.
Understanding the Closed Loop Gain
The closed loop gain is determined by the ratio of the feedback resistor to the input resistor. In this case, the feedback resistor remains the same at -1kΩ. Therefore, the closed loop gain will also remain the same at 25.
Conclusion
In summary, the closed loop gain of the inverting amplifier remains 25 even when the Op-Amp with an open loop gain of 200000 is substituted into the configuration. This is because the closed loop gain is determined by the ratio of the feedback resistor to the input resistor, and in this case, the feedback resistor remains the same.
|
Explore Courses for Physics exam
|
|
Similar Physics Doubts
The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer?
Question Description
The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer?.
The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? for Physics 2024 is part of Physics preparation. The Question and answers have been prepared according to the Physics exam syllabus. Information about The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? covers all topics & solutions for Physics 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer?.
Solutions for The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? in English & in Hindi are available as part of our courses for Physics.
Download more important topics, notes, lectures and mock test series for Physics Exam by signing up for free.
Here you can find the meaning of The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? defined & explained in the simplest way possible. Besides giving the explanation of
The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer?, a detailed solution for The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? has been provided alongside types of The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? theory, EduRev gives you an
ample number of questions to practice The certain inverting amplifier has a closed loop gain of 25. The Op-Amp has an open-loop gain of 100000. If another Op-Amp with an open loop gain of 200000 is substituted in the configuration, the closed loop gain is?Correct answer is '25'. Can you explain this answer? tests, examples and also practice Physics tests.
|
|
Explore Courses for Physics exam
|
|
Suggested Free Tests
Signup for Free!
Signup to see your scores go up within 7 days! Learn & Practice with 1000+ FREE Notes, Videos & Tests.
|
© EduRev
|
Education Revolution
|
Follow Us
|
Signup to see your scores
go up within 7 days!
Access 1000+ FREE Docs, Videos and Tests
Takes less than 10 seconds to signup