An open loop OP-amplifier has output voltage V0 and difference between non-inverting input voltage Vi, its open loop gain is given by:
Correct answer: A. AOL=V0/Vi
- A. AOL=V0/Vi
- B. AOL=V0 x Vi
- C. AOL= Vi/V0
- D. None of these
Explanation
This is the correct answer. In an open-loop configuration, the open-loop gain (AOL) of an op-amp is defined as the ratio of the output voltage (V0) to the input voltage (Vi). It quantifies how much the op-amp amplifies the input voltage to produce the output voltage.
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Alternating current varies periodically, so phase relationships become essential when current passes through a resistor, capacitor or inductor. The chapter distinguishes resistance from capacitive and inductive reactance, explains phase lead and lag, and connects changing electric and magnetic fields with the production and properties of electromagnetic waves.
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