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2 marksOperational Amplifiers

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

An experiment measures the input voltage V_i and corresponding output voltage V_o of an inverting amplifier using a variable voltage source. Readings are shown in Table 2.

Use your graph to calculate the gain of the amplifier.

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Other parts of this question

  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(a)(ii)State THREE properties of an ideal operational amplifier.[3 marks]
  3. 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]
  4. 2(b)(iii)Explain the shape of your graph.[3 marks]

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