CAPE Physics Unit 2 · 2017 · Paper 1 · Question Q23

Item 23 refers to the following diagram which shows two inverting operational amplifiers connected together. [Diagram showing cascaded inverting op-amps: stage 1 with 10\text{ k}\Omega input and 50\text{ k}\Omega feedback; stage 2 with 10\text{ k}\Omega input and 40\text{ k}\Omega feedback] Given that V_{in} = 6\,\mu\text{V}, what is the output, V_{out}, of the cascaded amplifiers?

1. (A)1.2 \times 10^{-4}\text{ V}
2. (B)5.4 \times 10^{-5}\text{ V}
3. (C)-2.7 \times 10^{-5}\text{ V}
4. (D)-1.8 \times 10^{-4}\text{ V}

This question uses a figure or table from the paper — you'll see it when you practise.