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

Obtain relativistic expression for the kinetic energy, Obtain Relativistic ...

Obtain Relativistic expression for the kinetic energy of the particle. Derive mass energy relation. Show that total energy E and momentum P are related, where m is rest mass and

State coulombs law in electrostatics, Q. State Coulombs law in electrostati...

Q. State Coulombs law in electrostatics? Coulomb's law declares that the force of attraction or repulsion between two point charges is directly proportional to the product of t

Calculate depth of the water, A circular hole of radius r at the bottom of ...

A circular hole of radius r at the bottom of an initially full water container is sealed by a ball of mass m and radius R (>r). The depth of the water is now slowly decr

Two-dimensional physics problem, An object is thrown at 25 m/s at 39 degree...

An object is thrown at 25 m/s at 39 degrees above the horizontal from a 40m tall cliff. How long is it in the air?

Describe how tunneling takes place in reversed bias, Describe how tunneling...

Describe how tunneling takes place in reversed bias When junction is reversed biased, p-region moves up with respect to the n-region as a result, filled energy levels on p- sid

Calculating unknown resistances by wheatstone bidge, Calculating unknown re...

Calculating unknown resistances The current through the galvanometer (G) - a very sensitive ammeter, is reduced to zero by adjusting R 4 .  The bridge is then said to be balanc

Units and measurement.., the unit of force and length are doubled, the unit...

the unit of force and length are doubled, the unit of energy will be

Explain electrolysis, The phenomenon of decomposition of electrolyte soluti...

The phenomenon of decomposition of electrolyte solution into ions on passing the current by it is called electrolysis. Practical functions of electrolysis are Electrotyping, ext

Deuterium and tritium, Why is it easy to fuse hydrogen isotopes deuterium a...

Why is it easy to fuse hydrogen isotopes deuterium and tritium than ordinary hydrogen?

Define eddy currents, Define Eddy Currents ? If you try to pull a solid ...

Define Eddy Currents ? If you try to pull a solid piece of some metals (good electrical conductors) quickly between the poles of a strong magnet, you will feel a force pushing

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