The input resistance of an operational amplifier is:
Correct answer: B. Very high
- A. Very low
- B. Very high
- C. Moderate
- D. Infinite
Explanation
The input resistance is infinite for an ideal OP-AMP which prevents current from flowing into the OP-AMP itself as it may damage the component. However, since we are not talking about an ideal situation, in real life the resistance is not infinite rather very high thus the answer is B.
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A p-n junction forms when p-type and n-type semiconductor regions meet, creating a depletion layer, barrier potential and rectifying action. The work covers forward and reverse bias, junction current, diode characteristics, and how a diode converts alternating current into pulsating direct current through half-wave and full-wave rectification.
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