Quelpr
1 markOperational Amplifiers

CAPE Physics Unit 2 · 2004 · Paper 1 · Question 6(a)(i)

Operational amplifiers and feedback.

Explain the effect of negative feedback on the gain of an operational amplifier.

The mark scheme is shown once you've answered.

Practise this question

Other parts of this question

  1. 6(a)(ii)Explain the effect of negative feedback on the bandwidth of an operational amplifier.[1 mark]
  2. 6(b)(i)Draw an inverting amplifier circuit with input resistance Ri and feedback resistance Rf, and use it to explain what is meant by a virtual ground.[4 marks]
  3. 6(b)(ii)Calculate the voltage at point A in Figure 6.[1 mark]
  4. 6(b)(iii)Calculate the output voltage Vo in Figure 6.[2 marks]
  5. 6(b)(iv)Calculate the overall gain of the circuit in Figure 6.[1 mark]

More practice: the rest of this paper · more Operational Amplifiers questions · all CAPE Physics Unit 2 past papers