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

Determine the voltage gain, If the input voltage for the op amp shown in Fi...

If the input voltage for the op amp shown in Figure, is -0.5V, Determine (a) The voltage gain (b) The output voltage.

What is fine structure of spectral lines, Q. What is fine structure of spec...

Q. What is fine structure of spectral lines? When the spectral line of hydrogen atom is observed by spectrometers having high resolving power it is found that a single line is

What would then be the sun''s new rotation period, Suppose that the Sun run...

Suppose that the Sun runs out of nuclear fuel and suddenly collapses to form a white dwarf star, with a diameter equal to that of the Earth. Assuming no mass loss, what would then

Compute the mass in atomic mass units, A singly charged positive ion moving...

A singly charged positive ion moving at 4.6 * 10^5 leaves a circular track of radius 7.94 mm along a direction perpendicular to the 1.8 -T magnetic field of the bubble chamber. Com

Force, give some examples of like and unlike parallel forces

give some examples of like and unlike parallel forces

Light, does lights of different wavelengths help us to see different colour...

does lights of different wavelengths help us to see different colour

Detremine the equivalent capacitance of the circuit, A 4μF capacitor is con...

A 4μF capacitor is connected in parallel with a 6μF capacitor. This arrangement is then linked in series with a 10μF capacitor. A supply p.d. of 250V is linked across the circ

Application to stress analysis, In mechanics, stress is a measure of the in...

In mechanics, stress is a measure of the internal forces acting within a deformable body. Quantitatively, it is a measure of the average force per unit area of a surface within the

Cyclotone, what is cyclotone and its uses or its application

what is cyclotone and its uses or its application

State conditions to obtain sustained interference of light, State two condi...

State two conditions to obtain sustained interference of light In Young's double slit experiment, using light of wavelength 400 nm, in terference fringes of width 'X' are obtain

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