Physics 9702 · AS & A Level · Characteristics of alternating currents
Characteristics of alternating currents — practice question
(a)[3]
State any three properties of an ideal operational amplifier (op-amp).
(b)
Fig. 9.1 shows an amplifier circuit.
(b(i))[2]
Calculate the gain of the amplifier circuit.
(b(ii))[3]
Fig. 9.2 shows how the input potential $V_{\text{IN}}$ varies with time $t$. On the axes in Fig. 9.2, show how the output potential $V_{\text{OUT}}$ varies with time $t$.
Worked solution & mark scheme
This 8-mark question has a full step-by-step worked solution and mark scheme. One marking point: “Choose any three from: zero output impedance / infinite input impedance / infinite gain / infinite bandwidth / infinite slew rate” …