CAPE Physics Unit 2 · 2007 · Paper 1 · Question Q30

Choose the response which will BEST complete the following statement. A flip-flop has two output states,

1. (A)one stable and one unstable. It remains in the stable state until a trigger pulse switches it to the unstable.
2. (B)both of which are unstable. It switches from one state to another after a short interval.
3. (C)one stable and one unstable. It remains in the unstable state for a short time and then switches to the stable state.
4. (D)both of which are stable. It remains in either state until a trigger pulse sends it to the other.