An operational amplifier (Op Amp) has which of the following characteristics? It has a trim function It uses an external power supply to amplify the input signal It can be used to perform mathematical operations When a feedback loop is in place, noise is reduced When both inputs are used, the results are added It has a characteristic gain built in It may be used to process either current or voltage input

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Operational Amplifier

An operational amplifier also called op amp is an integrated circuit or analog circuit that takes input as a differential voltage and produces output as a single-ended voltage. It is an IC that can amplify weak electric signals.An op amp has one output pin and two input pins. The basic role of an opamp is to amplify the voltage difference between the two input voltages. It is also used in filtering or to perform mathematical operations or in signal conditioning.