1458Electrical EngineeringMediumThe Op-amp can amplify________?Aneither d.c. nor a.c. signalsBa.c. signals onlyCd.c. signals onlyDboth a.c. and d.c. signals Correct answerD. both a.c. and d.c. signals ExplanationThe correct answer is both a.c. and d.c. signals.