The closed loop gain of OP-AMP depends on:
Correct answer: B. Externally connected resistance
- A. Internal structure of OP-AMP
- B. Externally connected resistance
- C. Voltage of power supplies
- D. Input resistance
Explanation
The correct answer is B: Externally connected resistance. The closed loop gain of an OP-AMP is determined by the feedback network, which typically consists of resistors connected externally. These resistors set the gain by forming a voltage divider in the feedback loop.Option A is incorrect because the internal structure does not directly influence the closed loop gain, which is designed to be dependent on external components for flexibility and precision.Option C is incorrect because the power supply voltage affects the maximum output swing and linearity but not the gain, provided it is within the operational range.Option D is incorrect because input resistance affects how the OP-AMP interfaces with the input signal source, not the gain itself.
Last updated
About Steady Current
Steady current is the continuous flow of charge at a constant rate through a conductor. The topic covers current, charge, potential difference, resistance, Ohm's law, resistivity and electrical power, along with series and parallel circuits, while distinguishing conventional current direction from electron motion.
Practise Current Electricity
1,052 free Current Electricity MCQs from Physics, each with the correct answer and an explanation. Unlimited attempts, no account needed.
Exams that ask Physics questions like this
Physics is on 13 papers prepared for on TestUstad, and all of them draw the same bank, so this question is worth knowing for every one of them.
Related questions
2.00 x 10^6 e passing through a conductor in 1 millisecond. Electric current through conductor is:
A 0.01A moving coil Galvanometer of 5 Ω resistance can be converted into a 0.2A ammeter by a resistance R with the Galvanometer when r is:
A 1000 W lamp operates at 220 V for 60 s.The electric current passing through the lamp will be
A 3 V battery is connected in series with ammeter and 2 ohm resistance after short circuiting. What will be the reading of ammeter?
a battery of 12 volts is connected to three resistors of 4 ohm, 5 ohm and 3 ohm joined together in parallel, the current through 3 ohm resistor would be?