TRILOCHAN

• Jun 9th, 2007

 

Virtual grounding is the shorting of the inverting and the non-inverting terminals of the op-amp.

mithilesh

• Jun 23rd, 2007

 

The i/p resistance of opamp is v high. thus the base currents are v less, approx 0. thus no current flows thru i/p resistance. thus we can say that both the NI and INV terminals of opamp are virtually shorted. i.e the voltage across both terminals is same. thus if NOW one terminal is grounded, due to virtual short other terminal also will be grounded.