For an ideal negative feedback configuration which of the following is true?(a) There is a virtual open circuit between the input terminals(b) The closed loop gain for a negative feedback does not depend only on the external parameters(c) There is a virtual short circuit between the input terminals(d) There is a virtual ground at the negative input terminalThe question was posed to me by my school teacher while I was bunking the class.I want to ask this question from The Inverting Configuration in chapter Operational Amplifiers of Electronic Devices & Circuits

For an ideal negative feedback configuration which of the following is

1.	For an ideal negative feedback configuration which of the following is true?(a) There is a virtual open circuit between the input terminals(b) The closed loop gain for a negative feedback does not depend only on the external parameters(c) There is a virtual short circuit between the input terminals(d) There is a virtual ground at the negative input terminalThe question was posed to me by my school teacher while I was bunking the class.I want to ask this question from The Inverting Configuration in chapter Operational Amplifiers of Electronic Devices & Circuits
Answer» CORRECT option is (c) There is a virtual short circuit between the input terminals The explanation is: There is ALWAYS a virtual short circuit in this TYPE of CASE. There will be a virtual ground if and only if one of the terminals is grounded.

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