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3 marksOperational Amplifiers

CAPE Physics Unit 2 · 2015 · Paper 2 · Question 2(a)(ii)

Operational amplifiers and their circuit configurations.

State THREE properties of an ideal operational amplifier.

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  1. 2(a)(i)Draw the circuit diagram for an inverting amplifier using an operational amplifier. Label EACH resistor in your circuit with the conventional term used to…[3 marks]
  2. 2(b)(i)On the grid provided in Figure 4, plot a graph of output voltage (V_o) vs input voltage (V_i).[4 marks]
  3. 2(b)(ii)Use your graph to calculate the gain of the amplifier.[2 marks]
  4. 2(b)(iii)Explain the shape of your graph.[3 marks]

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