Explain the virtual ground in an operational amplifier, Physics

Assignment Help:

Explain the significance of virtual ground in an operational amplifier?

Ans: Significance of Virtual Ground: Fig. (a) illustrates the circuit diagram of basic Inverting Amplifier. In this figure, the non-inverting terminal  is  grounded and input signal is applied to inverting terminal via resistor R1. However, difference input voltage is ideally zero: that is, voltage at the inverting terminal (v2) is approximately equal to that at non-inverting terminal (v1). Or we can say,  inverting  terminal  voltage  v2  is  approximately  at  ground  potential. Hence, inverting terminal is said to be at Virtual Ground. This notion is extremely useful in analysis of closed loop Op-amp circuits.

 

1235_Inverting Amplifier with Feedback.png


Related Discussions:- Explain the virtual ground in an operational amplifier

Not gate , give me full detail about not gate i.e its logic symbol, truth t...

give me full detail about not gate i.e its logic symbol, truth table etc

Explain the term magnetic declination, Explain the terms (i) magnetic decli...

Explain the terms (i) magnetic declination and (ii) angle of dip at a given place.

Sigma, with surface charge density sigma

with surface charge density sigma

Satellite motion, Satellite Motion A satellite is acted upon through th...

Satellite Motion A satellite is acted upon through the force of gravity and this force does accelerate it towards the Earth. Within the absence of gravity a satellite would mov

Force constant of a spring, Does the force constant of a spring changes if ...

Does the force constant of a spring changes if it is cut into parts? Ans) Force constant does not change because it is a constant

Ampere, Ampere; A (after A.M. Ampere, 1775-1836) The basic SI unit of e...

Ampere; A (after A.M. Ampere, 1775-1836) The basic SI unit of electric current, described as the current that, while going through two infinitely-long parallel conductors of ne

Explain the term resistivity, Explain the term 'resistivity' and write its ...

Explain the term 'resistivity' and write its S. I . unit. Derive the expression for the resistivity of a conductor in terms of number density of free electrons and relaxation time.

What is the intensity of the light, Que: Completely un-polarized light ...

Que: Completely un-polarized light of intensity Io is occurrence on a polarizer whose polarization direction makes an angle of 15.0 degrees amid respect to the vertical. What i

Magnitude and direction of the force on the dipole, In class, we learned th...

In class, we learned that the force on a dipole can be written as F = (p.Δ)E This force can be used to sort particles with no net charge but with a dipole moment in a method cal

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd