CAPE Physics Unit 2 · 2017 · Paper 1 · Question Q29

Items 29-30 refer to the following diagram. [Logic circuit diagram with inputs P and Q to a NOR gate producing R, an AND gate producing S, and R and S fed into a NOR gate producing T] If the inputs to P and Q are both held at logic 1, then the states of R, S and T are

1. (A)R: 0, S: 1, T: 0
2. (B)R: 0, S: 1, T: 1
3. (C)R: 1, S: 0, T: 0
4. (D)R: 1, S: 1, T: 1

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