Physics 9702 · AS & A Level · Characteristics of alternating currents

Characteristics of alternating currents — practice question

(a(i))[1]

State what infinite bandwidth means for an ideal operational amplifier (op-amp).

(a(ii))[1]

State the meaning of infinite slew rate for an ideal operational amplifier (op-amp).

(b(i))[2]

An amplifier circuit that contains an op-amp is shown in Fig. 8.1. The resistance of resistor $R$ must be chosen so that, for an input potential difference $V_{\text{IN}}$ of $0.40\,\text{V}$, the amplifier is just on the point of saturation. Determine the gain of the amplifier circuit.

(b(ii))[2]

Find the resistance of resistor $R$.

Worked solution & mark scheme

This 6-mark question has a full step-by-step worked solution and mark scheme. One marking point: gain remains constant for every frequency

  • Full mark scheme, point by point
  • Step-by-step worked solution
  • Write your answer & get it marked instantly by AI