Operational amplifiers can amplify:
Correct answer: C. Both AC and DC
- A. AC only
- B. DC only
- C. Both AC and DC
- D. None of them
Explanation
An operational amplifier is a very high gain voltage amplifier. It is used to amplify the signals by increasing its magnitude and can amplify both DC and AC signals.
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About PN Junction
A PN junction forms when p type and n type semiconductor regions meet, creating a depletion layer and a potential barrier. The topic covers forward and reverse bias, diode current voltage characteristics, breakdown and rectification, while distinguishing an ordinary junction diode from a transistor formed from multiple junctions.
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