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Which of the following is an Active element?

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Which of the following is an Active element?

(a) Resistor

(b) Inductor

(c) Capacitor

(d) OP-AMP

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This interesting question is from Sources and Some Definitions topic in portion Circuit Elements and Kirchhoff’s Laws of Network Theory

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The correct choice is (d) OP-AMP

The explanation: OP-AMP is an active element because it can be used for the amplification or generation of signals. All the other circuit elements are passive elements.

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